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Need help Degraded RAID 5

Hi Experts, Can you help me figure out what I am looking at. (image attached.
What should I do or Verify to correct it. I don't fully understand RAID. sorry

raid-5-degraded.jpg
0
mod2inc
Asked:
mod2inc
1 Solution
 
David Johnson, CD, MVPOwnerCommented:
you have to add disk 2 to the raid array. raid 5 needs 3 or more disks.
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mod2incAuthor Commented:
So does that mean one of the disk is dead?
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Seth SimmonsSr. Systems AdministratorCommented:
So does that mean one of the disk is dead?

the first 2 virtual disks are degraded so something isn't right
a physical disk in that array could be failed

the third virtual disk appears to be a single 4tb physical disks which would have no redundancy
is that disk a replacement for virtual disk 1?

can you click on physical disks (left pane above virtual) and show the results?
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Mark GalvinManaging Director / Principal ConsultantCommented:
We need to see the state of the phyiscal disks.
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mod2incAuthor Commented:
raid-5-degraded-2.jpg
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Seth SimmonsSr. Systems AdministratorCommented:
need to replace disk 3 since it failed
also, can you open an elevated command prompt and do
omreport storage vdisk
and
omreport storage pdisk controller=0
and post the output?  will be a bit easier than having all these screenshots
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mod2incAuthor Commented:
List of Physical Disks on Controller PERC S100 (Embedded)

Controller PERC S100 (Embedded)
ID                        : 0:0
Status                    : Ok
Name                      : Physical Disk 0:0
State                     : Ready
Power Status              : Not Applicable
Bus Protocol              : SATA
Media                     : HDD
Revision                  : CC4B____
Failure Predicted         : No
Certified                 : Not Applicable
Encryption Capable        : No
Encrypted                 : Not Applicable
Progress                  : Not Applicable
Mirror Set ID             : Not Applicable
Capacity                  : 1,863.00 GB (2000381018112 bytes)
Used RAID Disk Space      : 0.50 GB (536870912 bytes)
Available RAID Disk Space : 1,862.50 GB (1999844147200 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : ST2000DM001-9YN164
Serial No.                : W240E6W4
Part Number               : Not Available
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : Not Available
Manufacture Week          : Not Available
Manufacture Year          : Not Available
SAS Address               : 2FC8D2324A8F4B57

ID                        : 0:1
Status                    : Ok
Name                      : Physical Disk 0:1
State                     : Online
Power Status              : Not Applicable
Bus Protocol              : SATA
Media                     : HDD
Revision                  : CC4B____
Failure Predicted         : No
Certified                 : Not Applicable
Encryption Capable        : No
Encrypted                 : Not Applicable
Progress                  : Not Applicable
Mirror Set ID             : Not Applicable
Capacity                  : 1,863.00 GB (2000381018112 bytes)
Used RAID Disk Space      : 1,863.00 GB (2000381018112 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : ST2000DM001-9YN164
Serial No.                : Z24053T7
Part Number               : Not Available
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : Not Available
Manufacture Week          : Not Available
Manufacture Year          : Not Available
SAS Address               : 3B324B0E5893E232

ID                        : 0:2
Status                    : Ok
Name                      : Physical Disk 0:2
State                     : Online
Power Status              : Not Applicable
Bus Protocol              : SATA
Media                     : HDD
Revision                  : CC4C____
Failure Predicted         : No
Certified                 : Not Applicable
Encryption Capable        : No
Encrypted                 : Not Applicable
Progress                  : Not Applicable
Mirror Set ID             : Not Applicable
Capacity                  : 1,863.00 GB (2000381018112 bytes)
Used RAID Disk Space      : 1,863.00 GB (2000381018112 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : ST2000DM001-9YN164
Serial No.                : Z2F05FDM
Part Number               : Not Available
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : Not Available
Manufacture Week          : Not Available
Manufacture Year          : Not Available
SAS Address               : 0ECF35A07B29AEAD

ID                        : 0:3
Status                    : Critical
Name                      : Physical Disk 0:3
State                     : Failed
Power Status              : Not Applicable
Bus Protocol              : SATA
Media                     : HDD
Revision                  : CC4C____
Failure Predicted         : No
Certified                 : Not Applicable
Encryption Capable        : No
Encrypted                 : Not Applicable
Progress                  : Not Applicable
Mirror Set ID             : Not Applicable
Capacity                  : 1,863.02 GB (2000398934016 bytes)
Used RAID Disk Space      : 1,863.02 GB (2000398934016 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : ST2000DM001-9YN164
Serial No.                : W1E0B4H8
Part Number               : Not Available
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : Not Available
Manufacture Week          : Not Available
Manufacture Year          : Not Available
SAS Address               : 1CEA3D3D2B900F7E

ID                        : 0:5
Status                    : Ok
Name                      : Physical Disk 0:5
State                     : Online
Power Status              : Not Applicable
Bus Protocol              : SATA (External)
Media                     : HDD
Revision                  : MJAOA3B0
Failure Predicted         : No
Certified                 : Not Applicable
Encryption Capable        : No
Encrypted                 : Not Applicable
Progress                  : Not Applicable
Mirror Set ID             : Not Applicable
Capacity                  : 3,726.02 GB (4000787030016 bytes)
Used RAID Disk Space      : 3,726.02 GB (4000787030016 bytes)
Available RAID Disk Space : 0.00 GB (0 bytes)
Hot Spare                 : No
Vendor ID                 : DELL
Product ID                : Hitachi HDS724040ALE640
Serial No.                : PK1301PAG8LYSS
Part Number               : Not Available
Negotiated Speed          : Not Available
Capable Speed             : Not Available
Manufacture Day           : Not Available
Manufacture Week          : Not Available
Manufacture Year          : Not Available
SAS Address               : 5D4B82C15741063E

C:\Users\administrator.STARFABRICS0>
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Seth SimmonsSr. Systems AdministratorCommented:
ok...looks like disks 1, 2, and 3 are part of one raid 5 array - virtual disk 1 from the first screenshot so the failed disk 3 explains why that is degraded

not sure what is going on with disk 0
the size is the same as 1, 2, and 3 though only about 500mb is used which is odd
i'm suspecting that disk should be in that raid 5 array
does it have a drive letter and is it being used? screenshot from disk management would help with that

can you post the output of omreport storage vdisk ?
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mod2incAuthor Commented:
Seth thanks for the input. I want to let you know I' learning a lot from you.


=================================================================

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\>omreport storage vdisk
List of Virtual Disks in the System

Controller PERC S100 (Embedded)
ID                  : 1
Status              : Non-Critical
Name                : NONE
State               : Degraded
Encrypted           : Not Applicable
Layout              : RAID-5
Size                : 186.91 GB (200691154944 bytes)
Device Name         : Windows Disk 0
Bus Protocol        : SATA
Media               : HDD
Read Policy         : No Read Ahead
Write Policy        : Write Through
Cache Policy        : Not Applicable
Stripe Element Size : 64 KB
Disk Cache Policy   : Not Applicable

ID                  : 2
Status              : Non-Critical
Name                : NONE
State               : Degraded
Encrypted           : Not Applicable
Layout              : RAID-5
Size                : 3,538.05 GB (3798955196416 bytes)
Device Name         : Windows Disk 1
Bus Protocol        : SATA
Media               : HDD
Read Policy         : No Read Ahead
Write Policy        : Write Through
Cache Policy        : Not Applicable
Stripe Element Size : 64 KB
Disk Cache Policy   : Not Applicable

ID                  : 3
Status              : Ok
Name                : NONE
State               : Ready
Encrypted           : Not Applicable
Layout              : No RAID
Size                : 3,726.02 GB (4000787030016 bytes)
Device Name         : Windows Disk 2
Bus Protocol        : SATA
Media               : HDD
Read Policy         : No Read Ahead
Write Policy        : Write Through
Cache Policy        : Not Applicable
Stripe Element Size : Not Applicable
Disk Cache Policy   : Not Applicable

C:\Users\administrator.STARFABRICS0>


raid-5-degraded-3.jpg
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Seth SimmonsSr. Systems AdministratorCommented:
virtual disk 2 is the 3.5tb array which has one failed member (physical disk 3 and disk 1 in disk management screenshot)

physical disk 5 (that 4tb drive) is disk 2 in the disk management console

the first physical disk (disk 0 in the first screenshot and disk management) is odd
it shows about 500mb used but disk management shows less than 200gb

the only thing that would make sense here is that 2 separate arrays were created across the same 4 disks where a ~200gb array was created across disks 0, 1, 2, 3 and a separate 4tb array was created across disks 1, 2, 3 which would explain why physical disk 0 shows some 90% raid space unused - as if someone forgot to include disk 0 in that second raid 5 array

if that's the case, the 2 degraded virtual disks would be fixed by replacing physical disk 3 since they are both spread across those disks
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mod2incAuthor Commented:
Okay, Noted I will get a 4TB drive and replace Physical disk 3. hopefully it rebuilds
wish me luck. thanks for all the info.
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Seth SimmonsSr. Systems AdministratorCommented:
physical disk 3 is 2tb
replacing with a 4tb drive will work but you will waste 2tb
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mod2incAuthor Commented:
Oh My bad, I meant 2TB
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Seth SimmonsSr. Systems AdministratorCommented:
any update on this?
0

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