Steps to follow to replace a Failed Drive in PS6100

Hello, 

 Yes,.  Basically replace them and the rebuild will start.  There are no commands to issue. 

 However, you can't use OEM or NON-EQL drives in the 6100.  Even other "Dell" drives, like from a server or other SAN will work.  They are branded specifically for the EQL storage arrays.   So you will need a vendor that has drives for EQL arrays.  I would replace them one at a time.  Is this data backed up? 

 You might want to check the service data for that array, you might still be able to get it back under contract.  If you go to support.dell.com and enter in the service tag, you can see he ship date.  You can get up to 7 years from that date. 

 Regards, 

Don 

HI Don,

thanks a lot for your response. we have order drives using a vendor (techbuyer) they have the same exact drives (Refurbished once), Frm the CLI i copied & provided the Model number.

Slot Type Model Size RPM Status Errors SMART Health
---- -------- ---------------- ----------- ----- --------- ------ ------------
0 SAS(HDD) ST600MM0006 558.91GB 10000 online 0 ok
1 SAS(HDD) ST9600205SS 558.91GB 10000 online 0 ok
2 SAS(HDD) Unavailable 0MB 10000 failed 0 unavailable
3 SAS(HDD) ST9600205SS 558.91GB 10000 online 0 ok
4 SAS(HDD) ST9600205SS 558.91GB 10000 online 0 ok
5 SAS(HDD) ST600MM0088 558.91GB 10000 online 0 ok
6 SAS(HDD) ST600MM0088 558.91GB 10000 online 0 ok
7 SAS(HDD) Unavailable 0MB 10000 failed 0 unavailable

@DON can you also let me know how to check what other failed components in the device from the CLI?

Hello, 

 The "failed component" is likely to be the failed drives.  It's a general flag to indicate something has failed.  Then the last time "more spares expected" is the reason.  It's looking for spare drives to start a rebuild

Regards,

Don 

Hi Don,

Thank you..

is there a command in CLI to view the disk rebuild status and time? not sure but i can't open the GUI session due to some errors.

also in one of the system there are 2 failed drives to i have to do it one by one right? is this means wait till a drive completely rebuilt and do it the next one?

Regards,

Santhosh Kumar

Hello, 

At the CLI: 

member select MEMNBERNAME show    (Look for RAID percentage) 

_____________________________ Member Information ______________________________
Name: MEMBERNAME Status: online
TotalSpace: 33.74TB UsedSpace: 1TB
SnapSpace: 3.21GB Description:
Def-Gateway: 100.85.224.1 Serial-Number:
Disks: 24  
Spares: 1 Controllers: 2
CacheMode: write-back Connections: 142
RaidStatus: ok RaidPercentage: 0.000%
LostBlocks: false HealthStatus: normal
LocateMember: disable Controller-Safe: disabled
Version: V10.0.3 (R469188) Delay-Data-Move: disable
ChassisType: DELLSBB4u24 3.5 Accelerated RAID Capable: no
Pool: default Raid-policy: raid6

Re: Drives.  Since they have both failed but you are still online you can replace them both. It will put a greater load on the member while the rebuilds are running.  

What RAID level is that member using?  

 Regards,

Don

Hello, 

 Since the drives are 10K RPM and 500GB the rebuild time should not be very long.  

Don 

HI Don,

just replaced the drive and ran the command you provided in the previous reply..

ITFC-EQL-U44-GRP1> member select ITFC-EQL-U44-N1 show
_____________________________ Member Information ______________________________
Name: ITFC-EQL-U44-N1 Status: online
TotalSpace: 9.42TB UsedSpace: 7.58TB
SnapSpace: 121.29GB Description:
Def-Gateway: Serial-Number:
Disks: 24 CN-0WK7G2-70821-1A9-007N-A00
Spares: 2 Controllers: 2
CacheMode: write-back

Connections: 24
RaidStatus: ok

RaidPercentage: 0.000%
LostBlocks: false

HealthStatus: normal
LocateMember: disable

Controller-Safe: disabled
Version: V8.1.4 (R425229)

Delay-Data-Move: unconfigured
ChassisType: DELLSBB2u24 2.5

Accelerated RAID Capable: no
Pool: default

Raid-policy: raid50
 Product Family: PS6100
All-Disks-SED: no

SectorSize: 512
Language-Kit-Version: de, es, fr, ja, ExpandedSnapDataSize: N/A
ko, zh CompressedSnapDataSize: N/A
CompressionSavings: N/A Data-Reduction: no-capable-hardware
Raid-Rebuild-Delay-State: disabled
_______________________________________________________________________________

____________________________ Health Status Details ____________________________

Critical conditions::
None

Warning conditions::
None
_______________________________________________________________________________

____________________________ Operations InProgress ____________________________

ID StartTime Progress Operation Details

-- -------------------- -------- -----------------------------------------------

the RAID percentage showing 0.00%!!!

it means the rebuilt completed?

Hello, 

 Or the rebuilds had already finished and you just replaced the two consumed spares. 

member select ITFC-EQL-U44-N1 show disks 

 I suspect you will find two drives marked as SPARE now. 

 Regards,

Don

Hello Santhosh, 

  You are very welcome!  I am glad that I could assist you. 

   Thank you for letting us know the issue is resolved. 

    Regards, 

Don 

Don,

Good Morning,

i have a query.

we have a EqualLogic PS6100 which has 24 Disks (600GB SAS) and RAID50 Configured

Created 2 Volumes from these one with 4TB and another with 5TB

can you let me know how many drive failures this system can handle? 

as of now we have 2 failed drives (Slot 18 and Slot 20).

Regards,

Santhosh

HI Don,

yes, we had 2 Spare drives.

can i change the RAID from 50 to RAID 6 on the go? to survive one more drive failure?

We are planning to replace these sooner. we need to buy these so just wanted to check if we have time or not in case one more drive fails!!

Regards,

Santhosh

Hello, 

 I'm not 100% sure what state you are in.  You had two spares, so both failed drives were replaced OK and the current RAID status is "OK" or Green correct?  

 If so you should replace those spares ASAP in case you have another failure. 

 If not and BOTH RAIDsets are in degraded mode you can NOT convert to RAID6 and you need to get 4x spare drives to replace the two failed then have two spares available again after the rebuilds complete.   Then you can convert to RAID6 

Converting RAID levels puts strain on all the drives so you could see additional failures.  I suspect the firmware on the arrays and drives are probably old as well?     What is the firmware version? 

 Regards. 

Don