Good day! One fine day, our repository gave the following error (attachment). After that, the partition was completely lost, all virtual machine disks became inaccessible. Only a complete re-creation of the partition helped. Please tell me why this happened?

PROFILE FOR STORAGE ARRAY: MD3820i (Mon Jan 31 08:12:45 MSK 2022)


STANDARD VIRTUAL DISKS------------------------------

SUMMARY

Number of standard virtual disks: 5

See other Virtual Disks sub-tabs for premium feature information.


Name Thin Provisioned Status Capacity Accessible by Source
Fast_1 Yes Optimal 3 732,000 GB Host Group M1000e-ESXi Disk Pool Disk_Pool_1
Fast_2 Yes Optimal 3 072,000 GB Host Group M1000e-ESXi Disk Pool Disk_Pool_1
ISO Yes Optimal 2 048,000 GB Host Group M1000e-ESXi Disk Pool Disk_Pool_2
Slow_1 Yes Optimal 13,099 TB Host Group M1000e-ESXi Disk Pool Disk_Pool_2
Slow_2 Yes Optimal 13,199 TB Host Group M1000e-ESXi Disk Pool Disk_Pool_2

DETAILS


Virtual Disk name: Fast_1

Virtual Disk status: Optimal
Thin provisioned: Yes
Reporting policy: Thin

Virtual capacity: 3 732,000 GB
Maximum virtual capacity: 63,000 TB
Virtual Disk world-wide identifier: 60:0a:09:80:00:bb:de:ee:00:00:03:bb:5a:7b:44:45
Subsystem ID (SSID): 16385
Associated disk pool: Disk_Pool_1
RAID level: 6

LUN: 0
Accessible By: Host Group M1000e-ESXi

Physical Disk media type: Physical Disk
Physical Disk interface type: Serial Attached SCSI (SAS)
Logical sector size: 512 bytes
Enclosure loss protection: No

Secure: No

Preferred owner: RAID Controller Module in slot 1
Current owner: RAID Controller Module in slot 0


Segment size: 128 KB
Capacity reserved for future segment size changes: No
Maximum future segment size: Not applicable
Modification priority: High


Read cache: Enabled
Write cache: Enabled
Write cache without batteries: Disabled
Write cache with mirroring: Enabled
Flush write cache after (in seconds): 10.00
Dynamic cache read prefetch: Disabled

Enable background media scan: Enabled
Media scan with consistency check: Enabled

Pre-Read consistency check: Disabled

Repository for thin provisioning
Name: repos_0000
Capacity: 3 552,000 GB
Capacity consumed: 3 537,512 GB (99%)
Virtual Disk capacity allocated to repository: 95%
Expansion policy: Automatic
Maximum capacity: 64,000 TB
Utilization alert threshold: 100%


Virtual Disk name: Fast_2

Virtual Disk status: Optimal
Thin provisioned: Yes
Reporting policy: Thin

Virtual capacity: 3 072,000 GB
Maximum virtual capacity: 63,000 TB
Virtual Disk world-wide identifier: 60:0a:09:80:00:bb:e1:37:00:00:04:29:5a:7b:44:7e
Subsystem ID (SSID): 16386
Associated disk pool: Disk_Pool_1
RAID level: 6

LUN: 2
Accessible By: Host Group M1000e-ESXi

Physical Disk media type: Physical Disk
Physical Disk interface type: Serial Attached SCSI (SAS)
Logical sector size: 512 bytes
Enclosure loss protection: No

Secure: No

Preferred owner: RAID Controller Module in slot 0
Current owner: RAID Controller Module in slot 0


Segment size: 128 KB
Capacity reserved for future segment size changes: No
Maximum future segment size: Not applicable
Modification priority: High


Read cache: Enabled
Write cache: Enabled
Write cache without batteries: Disabled
Write cache with mirroring: Enabled
Flush write cache after (in seconds): 10.00
Dynamic cache read prefetch: Disabled

Enable background media scan: Enabled
Media scan with consistency check: Enabled

Pre-Read consistency check: Disabled

Repository for thin provisioning
Name: repos_0004
Capacity: 2 256,000 GB
Capacity consumed: 2 246,839 GB (99%)
Virtual Disk capacity allocated to repository: 73%
Expansion policy: Automatic
Maximum capacity: 64,000 TB
Utilization alert threshold: 100%


Virtual Disk name: ISO

Virtual Disk status: Optimal
Thin provisioned: Yes
Reporting policy: Thin

Virtual capacity: 2 048,000 GB
Maximum virtual capacity: 63,000 TB
Virtual Disk world-wide identifier: 60:0a:09:80:00:bb:e1:37:00:00:0d:96:5a:99:8f:01
Subsystem ID (SSID): 16391
Associated disk pool: Disk_Pool_2
RAID level: 6

LUN: 6
Accessible By: Host Group M1000e-ESXi

Physical Disk media type: Physical Disk
Physical Disk interface type: Serial Attached SCSI (SAS)
Logical sector size: 512 bytes
Enclosure loss protection: No

Secure: No

Preferred owner: RAID Controller Module in slot 0
Current owner: RAID Controller Module in slot 0


Segment size: 128 KB
Capacity reserved for future segment size changes: No
Maximum future segment size: Not applicable
Modification priority: High


Read cache: Enabled
Write cache: Enabled
Write cache without batteries: Disabled
Write cache with mirroring: Enabled
Flush write cache after (in seconds): 10.00
Dynamic cache read prefetch: Disabled

Enable background media scan: Enabled
Media scan with consistency check: Enabled

Pre-Read consistency check: Disabled

Repository for thin provisioning
Name: repos_0010
Capacity: 224,000 GB
Capacity consumed: 203,119 GB (90%)
Virtual Disk capacity allocated to repository: 10%
Expansion policy: Automatic
Maximum capacity: 64,000 TB
Utilization alert threshold: 100%


Virtual Disk name: Slow_1

Virtual Disk status: Optimal
Thin provisioned: Yes
Reporting policy: Thin

Virtual capacity: 13,099 TB
Maximum virtual capacity: 63,000 TB
Virtual Disk world-wide identifier: 60:0a:09:80:00:bb:de:ee:00:00:03:bf:5a:7b:44:f5
Subsystem ID (SSID): 16387
Associated disk pool: Disk_Pool_2
RAID level: 6

LUN: 3
Accessible By: Host Group M1000e-ESXi

Physical Disk media type: Physical Disk
Physical Disk interface type: Serial Attached SCSI (SAS)
Logical sector size: 512 bytes
Enclosure loss protection: No

Secure: No

Preferred owner: RAID Controller Module in slot 1
Current owner: RAID Controller Module in slot 0


Segment size: 128 KB
Capacity reserved for future segment size changes: No
Maximum future segment size: Not applicable
Modification priority: High


Read cache: Enabled
Write cache: Enabled
Write cache without batteries: Disabled
Write cache with mirroring: Enabled
Flush write cache after (in seconds): 10.00
Dynamic cache read prefetch: Disabled

Enable background media scan: Enabled
Media scan with consistency check: Enabled

Pre-Read consistency check: Disabled

Repository for thin provisioning
Name: repos_0005
Capacity: 10 048,000 GB
Capacity consumed: 10 034,855 GB (99%)
Virtual Disk capacity allocated to repository: 74%
Expansion policy: Automatic
Maximum capacity: 64,000 TB
Utilization alert threshold: 100%


Virtual Disk name: Slow_2

Virtual Disk status: Optimal
Thin provisioned: Yes
Reporting policy: Thin

Virtual capacity: 13,199 TB
Maximum virtual capacity: 63,000 TB
Virtual Disk world-wide identifier: 60:0a:09:80:00:bb:e1:37:00:00:0d:8c:5a:95:c0:9f
Subsystem ID (SSID): 16388
Associated disk pool: Disk_Pool_2
RAID level: 6

LUN: 1
Accessible By: Host Group M1000e-ESXi

Physical Disk media type: Physical Disk
Physical Disk interface type: Serial Attached SCSI (SAS)
Logical sector size: 512 bytes
Enclosure loss protection: No

Secure: No

Preferred owner: RAID Controller Module in slot 0
Current owner: RAID Controller Module in slot 0


Segment size: 128 KB
Capacity reserved for future segment size changes: No
Maximum future segment size: Not applicable
Modification priority: High


Read cache: Enabled
Write cache: Enabled
Write cache without batteries: Disabled
Write cache with mirroring: Enabled
Flush write cache after (in seconds): 10.00
Dynamic cache read prefetch: Disabled

Enable background media scan: Enabled
Media scan with consistency check: Enabled

Pre-Read consistency check: Disabled

Repository for thin provisioning
Name: repos_0002
Capacity: 9 472,000 GB
Capacity consumed: 1 880,432 GB (19%)
Virtual Disk capacity allocated to repository: 70%
Expansion policy: Automatic
Maximum capacity: 64,000 TB
Utilization alert threshold: 100%