Diagnose and replace a defective disk

Last update: October 16 2026Open in Markdown

You can check the drive status using SMART (Self-Monitoring, Analysis and Reporting Technology) attributes. If the drive turns out to be defective based on the check results, you can replace the defective drive.

Check disk health

1. Get SMART attributes.
2. Evaluate SMART attribute values.

1. Obtain SMART attributes

The method for obtaining SMART attributes depends on the operating system installed on the server and how the disk is connected to the server:

• without a RAID controller — the disk is connected directly to the motherboard or via an HBA controller;
• via a RAID controller — the disk is connected via an Adaptec or MegaRAID controller installed on the server.

Linux

Without a RAID controller

1. Connect to the server via SSH or via the KVM console.

2. Install the smartmontools package — a set of utilities for monitoring the status of HDDs and SSDs that support SMART technology.

   apt-get install smartmontools

3. Output the disk information:

   lsblk

   The response will contain information about the disks. Remember or copy the disk names. For example:

   NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
   sda           8:0    0   1.8T  0 disk
   └─sda1        8:1    0   1.8T  0 part /mnt/data
   sdb           8:16   0 931.5G  0 disk
   └─sdb1        8:17   0 931.5G  0 part /mnt/backup
   nvme0n1     259:0    0 465.8G  0 disk
   ├─nvme0n1p1 259:1    0   512M  0 part /boot/efi
   ├─nvme0n1p2 259:2    0    16G  0 part [SWAP]
   └─nvme0n1p3 259:3    0 449.3G  0 part /

   Here sda, sdb, nvme0n1 are disk names.

4. Start reading SMART attributes. The command to run depends on the disk interface:

   • for SATA:

   smartctl -iA /dev/<disk_name>

   Specify <disk_name> — the disk name that you copied in step 3.

   • for NVME:

   nvme smart-log /dev/<disk_name>

   Specify <disk_name> — the disk name that you copied in step 3.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Install the smartmontools package — a set of utilities for monitoring the status of HDDs and SSDs that support SMART technology.

   apt-get install smartmontools

3. Get the RAID controller numbers:

   arcconf LIST

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   Controllers found: 1
   ----------------------------------------------------------------------
   Controller information
   ----------------------------------------------------------------------
   Controller ID             : Status, Slot, Mode, Name, SerialNumber, WWN
   ----------------------------------------------------------------------
   Controller 1:             : Optimal, Slot 3, RAID, Adaptec SmartRAID, 0X00XXXX000, 50000D0000X01234

   Here 1 in the value Controller 1 is the RAID controller number.

4. Get the disk identifiers and channel numbers on which the disks are connected to the RAID controller:

   arcconf getconfig <raid_number>

   Specify <raid_number> — the RAID controller number that you copied in step 3.

   The response will contain information about the disks. Remember or copy the disk identifiers and channel numbers. For example:

   ----------------------------------------------------------------------
   Physical Device information
   ----------------------------------------------------------------------
       Device #5
           Device is a Hard drive
           State                              : Online
           Supported                          : Yes
           Transfer Speed                     : SATA 3.0 Gb/s
           Reported Channel,Device(T:L)       : 0,5(5:0)

   Here Reported Channel,Device(T:L): 0,5(5,0) is information about the drive connected to the controller, where:

   • 0 is the controller channel number to which the drive is connected;
   • 5 is the drive ID on the controller.

5. Get the logical SCSI device names:

   sg_map

   The output will display a mapping list of logical SCSI device names (/dev/sg*) to block disk names (/dev/sd*). Remember or copy the logical SCSI device names. For example:

   /dev/sg0  /dev/sda
   /dev/sg1  /dev/sdb

   Here sg0, sg1 are logical SCSI device names.

6. Start reading SMART attributes:

   smartctl -iA -d aacraid,<raid_number>,<logical_unit_number>,<device_id> /dev/<scsi_name>

   Specify:

   • <raid_number> — the RAID controller number that you copied in step 3;
   • <logical_unit_number> — the channel number with the drive that you copied in step 4;
   • <device_id> — the drive ID on the RAID controller that you copied in step 4;
   • <scsi_name> — the logical SCSI device name that you copied in step 5.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Install the smartmontools package — a set of utilities for monitoring the status of HDDs and SSDs that support SMART technology.

   apt-get install smartmontools

3. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

4. Get the indices of the disks installed on the RAID controller:

   storcli /c<raid_number> show all

   Specify <raid_number> — the RAID controller number that you copied in step 3.

   The response will contain information about the disks installed on the RAID controller. Remember or copy the disk indices. For example:

   Drive Information :
   ---------------------------------------------------------------------------------
   EID:Slt DID State DG       Size Intf Med SED PI SeSz Model               Sp Type
   ---------------------------------------------------------------------------------
   252:4    39 Onln   1 446.625 GB SATA SSD N   N  512B INTEL SSDSC2KB480G8 U  -
   252:5    40 Onln   0 893.750 GB SATA SSD N   N  512B INTEL SSDSC2KB960G8 U  -
   ---------------------------------------------------------------------------------

   Here the values 39, 40 in the DID field are drive indexes.

5. Get the names of the disks installed on the RAID controller:

   lsscsi

   The response will contain information about the disks installed on the RAID controller. Remember or copy the disk names. For example:

   [32:0:0:0]   disk    LSI      MR9271-8i        3.46  /dev/sda
   [32:1:0:0]   disk    LSI      MR9271-8i        3.46  /dev/sdb

   Here sda, sdb are disk names.

6. Start reading SMART attributes:

   smartctl -iA -d megaraid,<disk_index> /dev/<disk_name>

   Specify:

   • <disk_index> — the drive index that you copied in step 4;
   • <disk_name> — the disk name that you copied in step 5.

Windows

Without a RAID controller

1. Connect to the server via SSH or via the KVM console.

2. Install smartmontools — a set of utilities for monitoring the status of HDDs and SSDs that support SMART technology.

3. Run PowerShell as an administrator.

4. Output the disk information:

   smartctl --scan

   The response will contain information about the disks. Remember or copy the disk names. For example:

   /dev/sda -d ata # Kingston SSD
   /dev/sdb -d ata # Seagate HDD
   /dev/nvme0 -d nvme # Samsung NVMe

   Here sda, sdb, nvme0 are disk names.

5. Start reading SMART attributes:

   smartctl -A /dev/<disk_name>

   Specify <disk_name> — the disk name that you copied in step 4.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Download and install Adaptec maxView Storage Manager — a graphical user interface for managing and monitoring Adaptec RAID controllers. It allows you to view SMART attributes for each physical drive.

3. Run maxView Storage Manager.

4. In the Enterprise View menu, expand the list of drives for the required RAID controller.

5. Select the disk.

6. Open the SMART tab.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Download and install StorCLI — a utility for managing MegaRAID controllers.

3. Run PowerShell as an administrator.

4. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

5. Get the enclosure identifier and slot numbers where the disks are installed on the RAID controller:

   storcli /c<raid_number> /eall /sall show all

   Specify <raid_number> — the RAID controller number that you copied in step 4.

   The response will contain information about the disks. Remember or copy the enclosure identifier and slot numbers. For example:

   Drive Information :
   
   ---------------------------------------------------------------------------------
   EID:Slt DID State DG       Size Intf Med SED PI SeSz Model               Sp Type
   ---------------------------------------------------------------------------------
   252:4    39 Onln   1 446.625 GB SATA SSD N   N  512B INTEL SSDSC2KB480G8 U  -
   252:5    40 Onln   0 893.750 GB SATA SSD N   N  512B INTEL SSDSC2KB960G8 U  -
   ---------------------------------------------------------------------------------

   Where:

   • the value 252 in the EID field is the ID of the enclosure where the drive is installed;
   • the values 4, 5 in the Slt field are the slot number in the enclosure where the drive is installed.

6. Start reading SMART attributes:

   storcli /c<raid_number> /e<enclosure_id> /s<slot_id> show all

   Specify:

   • <enclosure_id> — the enclosure ID that you copied in step 5;
   • <slot_id> — the slot number in the enclosure that you copied in step 5.

2. Assess SMART attributes

A disk is considered defective if at least one of the SMART attributes meets the specified conditions.

HDD disks

	Attribute description	Field	Attribute value
5 Reallocated_Sector_Ct	Number of sectors reallocated due to errors	RAW_VALUE	> 0
7 Seek_Error_Rate	Error rate during positioning of the head assembly	VALUE	< 45
9 Power_on_hours	Power-on hours	RAW_VALUE	> 43800
10 Spin_Retry_Count	Number of retries to spin up the disk to operating speed if the first attempt failed	RAW_VALUE	> 10
197 Current_Pending_Sector	Number of sectors in the waiting queue for reallocation	RAW_VALUE	> 0
198 Offline_Uncorrectable	Number of sectors on the disk that the disk controller tried to fix by itself	RAW_VALUE	> 0

SSD disks

	Attribute description	Field	Attribute value
175 Power Loss Protection Failure	Status of the mechanism that prevents data corruption during a sudden power loss	VALUE	< 10
184 End-to-End Error Detection Count	Number of errors detected during data transfer between the RAID controller and memory and back	RAW_VALUE	> 9
231 Life Left (SSDs) or Temperature	Percentage of remaining SSD life until the end of service life	VALUE	< 11
232 Available Reserved Space	Indicates that spare blocks for replacing damaged memory cells are almost exhausted	VALUE	< 11
233 Media Wearout Indicator	SSD flash memory wear level	VALUE	< 11

NVME drives

	Attribute description	Attribute value
Available Spare	Percentage of spare memory cells that can be used instead of those that have failed	< 11
Percentage Used	Memory wear level	> 105
Media and Data Integrity Errors	Number of write or read errors on the media	> 0

Replace a defective disk

You can identify a drive malfunction as a result of a drive status check. If, based on the SMART attribute evaluation, the drive is defective, you can initiate its replacement. To do this:

1. Get the serial number of the defective drive.
2. Coordinate the drive replacement.
3. If the drive is added to a RAID array, remove the drive from the RAID array.
4. Light up the drive.
5. Check the drive in the system.
6. If the drive was in a RAID array, add the drive to the RAID array.

1. Obtain the serial number of the defective disk

Linux

Without a RAID controller

1. Connect to the server via SSH or via the KVM console.

2. Obtain the serial number of the defective disk; to do this, display information about the disks:

   lsblk -o name,serial,model

   The response will contain information about the disks. Copy the serial number of the defective disk. For example:

   NAME    SERIAL            MODEL
   sdb     S0H0N0XYZ123456   Samsung SSD 970 EVO Plus 500GB
   nvme0n1 S0D0NX0M001234    Samsung SSD 980 PRO 1TB

   Here SERIAL is the drive serial number.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Get the RAID controller numbers:

   arcconf LIST

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   Controllers found: 1
   ----------------------------------------------------------------------
   Controller information
   ----------------------------------------------------------------------
   Controller ID             : Status, Slot, Mode, Name, SerialNumber, WWN
   ----------------------------------------------------------------------
   Controller 1:             : Optimal, Slot 3, RAID, Adaptec SmartRAID, 0X00XXXX000, 50000D0000X01234

   Here 1 in the value Controller 1 is the RAID controller number.

3. Obtain the serial number of the defective disk; to do this, display information about the disks:

   arcconf getconfig <raid_number>

   Specify <raid_number> — the RAID controller number that you copied in step 2.

   The response will contain information about the disks. Copy the serial number of the defective disk. For example:

   ----------------------------------------------------------------------
   Physical Device information
   ----------------------------------------------------------------------
       Device #5
           Device is a Hard drive
           State                                : Online
           Block Size                           : 512 Bytes
           Supported                            : Yes
           Programmed Max Speed                 : SATA 6.0 Gb/s
           Transfer Speed                       : SATA 6.0 Gb/s
           Reported Channel,Device(T:L)         : 0,5(5:0)
           Model                                : TOSHIBA MG06ACA800
           Serial number                        : Y0Y0A00WWWRE

   Here Serial number is the drive serial number.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

3. Obtain the serial number of the defective disk; to do this, display information about the disks:

   storcli /c<raid_number> show all | grep SN

   Specify <raid_number> — the RAID controller number that you copied in step 2.

   The response will contain information about the disks. Copy the serial number of the defective disk. For example:

   Drive Information :
   --------------------------------------------------------------------------------------------
   EID:Slt DID State  DG  Size Intf Med SED PI SeSz Model               Sp Type   SN
   --------------------------------------------------------------------------------------------
   252:0   11  Onln   0  1.8 TB SAS  HDD N   N  512B TOSHIBA MG06ACA800  U  U      X8X0X000AAAE
   252:1   12  Onln   0  1.8 TB SAS  HDD N   N  512B TOSHIBA MG06ACA800  U  U      A9A0A00RRRRJ
   252:2   13  Onln   0  1.8 TB SAS  HDD N   N  512B TOSHIBA MG06ACA800  U  U      W9W0Y00RRHHA

   Here SN is the drive serial number.

Windows

Without a RAID controller

1. Connect to the server via SSH or via the KVM console.

2. Run PowerShell as an administrator.

3. Obtain the serial number of the defective disk; to do this, display information about the disks:

   wmic diskdrive get model,serialnumber

   The response will contain information about the disks. Copy the serial number of the defective disk. For example:

   Model                   SerialNumber
   TOSHIBA MG06ACA800      X8X0X000AAAE
   TOSHIBA MG06ACA800      A9A0A00RRRRJ

   Here SerialNumber is the drive serial number.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Run maxView Storage Manager.

3. In the Enterprise View menu, expand the list of drives for the required RAID controller.

4. Select the defective disk.

5. Copy the disk serial number.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Run PowerShell as an administrator.

3. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

4. Obtain the serial number of the defective disk; to do this, display information about the disks:

   storcli /c<raid_number> show all | grep SN

   Specify <raid_number> — the RAID controller number that you copied in step 2.

   The response will contain information about the disks. Copy the serial number of the defective disk. For example:

   Drive Information :
   ------------------------------------------------------------------------------
   EID:Slt DID State  DG  Size Intf Med SED PI SeSz Model          Sp Type  SN
   ------------------------------------------------------------------------------
   252:0   11  Onln   0  1.8 TB SAS  HDD N   N  512B ST1800MM0129  U  U      Z1A2B3C4
   252:1   12  Onln   0  1.8 TB SAS  HDD N   N  512B ST1800MM0129  U  U      Z1A2B3C5
   252:2   13  Onln   0  1.8 TB SAS  HDD N   N  512B ST1800MM0129  U  U      Z1A2B3C6

   Here SN is the drive serial number.

2. Coordinate the disk replacement

1. Create a ticket. In the ticket, specify:

   • the retrieved SMART attributes;
   • the serial number of the defective drive.

2. If the drive replacement is approved, a Selectel specialist will confirm a convenient time and duration for the maintenance work. The duration of the work will be required to determine the drive LED indication time.

3. Remove the disk from the RAID array

If the drive is in a RAID array, remove the drive from the array.

4. Illuminate the disk

At the time designated for the work, we will inform you in the ticket that we are ready to proceed with the disk replacement.

If the drive cannot be illuminated and engineers are unable to identify it by serial number, the server will need to be shut down to replace the drive. In this case, we will inform you about the issue with identifying the drive and coordinate a server shutdown time in the ticket.

Linux

Without a RAID controller

To illuminate the drive, put a load on it, for example, by running a write or read operation. If you remove the drive while these operations are running, read errors will occur. This is normal behavior, as the command is attempting to access data on a drive that has already been removed.

1. Connect to the server via SSH or via the KVM console.

2. Output the disk information:

   lsblk

   The response will contain information about the disks. Remember or copy the disk name. For example:

   NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
   sda           8:0    0   1.8T  0 disk
   └─sda1        8:1    0   1.8T  0 part /mnt/data
   sdb           8:16   0 931.5G  0 disk
   └─sdb1        8:17   0 931.5G  0 part /mnt/backup
   nvme0n1     259:0    0 465.8G  0 disk
   ├─nvme0n1p1 259:1    0   512M  0 part /boot/efi
   ├─nvme0n1p2 259:2    0    16G  0 part [SWAP]
   └─nvme0n1p3 259:3    0 449.3G  0 part /

   Here sda, sdb, nvme0n1 are disk names.

3. Illuminate the disk:

   dd if=/dev/<disk_name> of=/dev/null

   Specify <disk_name> — the disk name that you copied in step 2.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Get the RAID controller numbers:

   arcconf LIST

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   Controllers found: 1
   ----------------------------------------------------------------------
   Controller information
   ----------------------------------------------------------------------
   Controller ID             : Status, Slot, Mode, Name, SerialNumber, WWN
   ----------------------------------------------------------------------
   Controller 1:             : Optimal, Slot 3, RAID, Adaptec SmartRAID, 0X00XXXX000, 50000D0000X01234

   Here 1 in the value Controller 1 is the RAID controller number.

3. Get the disk identifier and channel number on which the disk is connected to the RAID controller::

   arcconf getconfig <raid_number>

   Specify <raid_number> — the RAID controller number that you copied in step 2.

   The response will contain information about the disks. Remember or copy the disk identifier and channel number. For example:

   ----------------------------------------------------------------------
   Physical Device information
   ----------------------------------------------------------------------
       Device #5
           Device is a Hard drive
           State                              : Online
           Supported                          : Yes
           Transfer Speed                     : SATA 3.0 Gb/s
           Reported Channel,Device(T:L)       : 0,5(5:0)

   Here Reported Channel,Device(T:L): 0,5(5,0) is information about the drive connected to the controller, where:

   • 0 is the controller channel number to which the drive is connected;
   • 5 is the drive ID on the controller.

4. Illuminate the disk:

   arcconf IDENTIFY <raid_number> DEVICE <channel_id> <device_id> ... [TIME <blink_time>][nologs]

   Specify:

   • <raid_number> — the RAID controller number that you copied in step 2;
   • <channel_id> — the channel number that you copied in step 3;
   • <device_id> — the drive ID on the RAID controller that you copied in step 3;
   • <blink_time> — indication duration in seconds. The drive must be illuminated until it is replaced. You can check the approximate work duration in the ticket.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

3. Get the enclosure identifier and slot number where the disk is installed on the RAID controller:

   storcli /c<raid_number> show all

   Specify <raid_number> — the RAID controller number that you copied in step 2.

   The response will contain information about the disks connected to the RAID controller. Remember or copy the enclosure identifier and slot number. For example:

   Drive Information :
   ---------------------------------------------------------------------------------
   EID:Slt DID State DG       Size Intf Med SED PI SeSz Model               Sp Type
   ---------------------------------------------------------------------------------
   252:4    39 Onln   1 446.625 GB SATA SSD N   N  512B INTEL SSDSC2KB480G8 U  -
   252:5    40 Onln   0 893.750 GB SATA SSD N   N  512B INTEL SSDSC2KB960G8 U  -
   ---------------------------------------------------------------------------------

   Where:

   • the value 252 in the EID field is the ID of the enclosure where the drive is installed;
   • the values 4, 5 in the Slt field are the slot number in the enclosure where the drive is installed.

4. Illuminate the disk:

   storcli /c<raid_number>/e<enclosure_id>/s<slot_id> start locate

   Specify:

   • <raid_number> — the number of the RAID controller to which the drive is connected;
   • <enclosure_id> — the enclosure ID that you copied in step 3;
   • <slot_id> — the slot number in the enclosure that you copied in step 3.

Windows

Without a RAID controller

To illuminate the drive, put a load on it, for example, by running a write or read operation. If you remove the drive while these operations are running, read errors will occur. This is normal behavior, as the command is attempting to access data on a drive that has already been removed.

1. Connect to the server via SSH or via the KVM console.

2. Run PowerShell as an administrator.

3. Illuminate the disk:

   diskspd -b128K -d<blink_time> -h -o32 -t8 -r <disk_volume>

   Specify:

   • <blink_time> — indication duration in seconds. The drive must be illuminated until it is replaced. You can check the approximate work duration in the ticket;
   • <disk_volume> — a volume on the disk, for example, C:.

Adaptec

1. Connect to the server via SSH or via the KVM console.

2. Run maxView Storage Manager.

3. In the Enterprise View menu, expand the list of drives for the required RAID controller.

4. Select the disk.

5. Click Locate.

MegaRAID

1. Connect to the server via SSH or via the KVM console.

2. Run PowerShell as an administrator.

3. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

4. Get the enclosure identifier and slot number where the disk is installed on the RAID controller:

   storcli /c<raid_number> show all

   Specify <raid_number> — the RAID controller number that you copied in step 3.

   The response will contain information about the disks. Remember or copy the enclosure identifier and slot numbers. For example:

   Drive Information :
   ---------------------------------------------------------------------------------
   EID:Slt DID State DG       Size Intf Med SED PI SeSz Model               Sp Type
   ---------------------------------------------------------------------------------
   252:4    39 Onln   1 446.625 GB SATA SSD N   N  512B INTEL SSDSC2KB480G8 U  -
   252:5    40 Onln   0 893.750 GB SATA SSD N   N  512B INTEL SSDSC2KB960G8 U  -
   ---------------------------------------------------------------------------------

   Where:

   • the value 252 in the EID field is the ID of the enclosure where the drive is installed;
   • the values 4, 5 in the Slt field are the slot number in the enclosure where the drive is installed.

5. Illuminate the disk:

   storcli /c<raid_number>/e<enclosure_id>/s<slot_id> start locate

   Specify:

   • <raid_number> — the RAID controller number that you copied in step 3;
   • <enclosure_id> — the enclosure ID that you copied in step 4;
   • <slot_id> — the slot number in the enclosure that you copied in step 4.

5. Check the disk in the system

Linux

Without a RAID controller

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Make sure the disk has initialized in the system:

   lsblk

4. If the disk is missing from the list, restart the server. If the disk has not initialized in the system after the restart, inform us in the ticket.

Adaptec

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Make sure the disk has initialized in the system:

   3.1. Get the RAID controller numbers:

   arcconf LIST

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   Controllers found: 1
   ----------------------------------------------------------------------
   Controller information
   ----------------------------------------------------------------------
   Controller ID             : Status, Slot, Mode, Name, SerialNumber, WWN
   ----------------------------------------------------------------------
   Controller 1:             : Optimal, Slot 3, RAID, Adaptec SmartRAID, 0X00XXXX000, 50000D0000X01234

   Here 1 in the value Controller 1 is the RAID controller number.

   3.2. Obtain information about the disks connected to the RAID controller:

   arcconf getconfig <raid-number>

   Specify <raid-number> — the RAID controller number that you copied in step 3.1.

4. If the disk has not initialized in the system, inform us in the ticket.

MegaRAID

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Make sure the disk has initialized in the system:

   3.1. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

   3.2. Obtain information about the disks connected to the RAID controller:

   storcli /c<raid_number> show all

   Specify <raid_number> — the RAID controller number that you copied in step 3.1.

4. If the disk has not initialized in the system, inform us in the ticket.

5. Disable the indication on the RAID controller:

   storcli /c<raid_number>/e<enclosure_id>/s<slot_id> stop locate

   Specify:

   • <raid_number> — the RAID controller number that you copied in step 3.1;
   • <enclosure_id> — the enclosure ID that you copied in step 3.2;
   • <slot_id> — the slot number in the enclosure that you copied in step 3.2.

Windows

Without a RAID controller

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Run PowerShell as an administrator.

4. Make sure the disk has initialized in the system:

   wmic diskdrive get model,name,serialnumber

5. If the disk is missing from the list, restart the server. If the disk has not initialized in the system after the restart, inform us in the ticket

Adaptec

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Make sure the disk has initialized in the system:

   3.1. Run maxView Storage Manager.

   3.2. In the Enterprise View menu, expand the list of drives for the required RAID controller.

4. If the disk has not initialized in the system, inform us in the ticket.

5. Turn off indication on the RAID controller. To do this, select the drive and click Stop.

MegaRAID

1. Wait for a message from a Selectel employee in the ticket confirming that the disk has been replaced.

2. Connect to the server via SSH or via the KVM console.

3. Run PowerShell as an administrator.

4. Make sure the disk has initialized in the system:

   4.1. Get the RAID controller numbers:

   storcli64 show all

   The response will contain information about the RAID controllers. Remember or copy the RAID controller number. For example:

   System Overview :
   ===============
   
   ------------------------------------------------------------------------------------
   Ctl Model                   Ports PDs DGs DNOpt VDs VNOpt BBU sPR DS  EHS ASOs Hlth
   ------------------------------------------------------------------------------------
   0   AVAGOMegaRAIDSAS9361-8i     8   4   2     0   2     0 Opt On  1&2 Y      3 Opt
   ------------------------------------------------------------------------------------

   Here 0 in the Ctl field is the RAID controller number.

   4.2. Obtain information about the disks connected to the RAID controller:

   storcli /c<raid_number> /eall /sall show all

   Specify <raid_number> — the RAID controller number that you copied in step 4.1.

5. If the disk has not initialized in the system, inform us in the ticket.

6. Disable the indication on the RAID controller:

   storcli /c<raid_number>/e<enclosure_id>/s<slot_id> stop locate

   Specify:

   • <raid_number> — the RAID controller number that you copied in step 4.1;
   • <enclosure_id> — the enclosure ID that you copied in step 4.2;
   • <slot_id> — the slot number in the enclosure that you copied in step 4.2.

6. Add the disk to the RAID array

If the drive was in a RAID array, add the replaced drive to the array.