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Asked: 2023-10-03 06:32:13 +0800 CST

Use storcli to get / set spare drive

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I have an LSI controller with a R10 array consisting of 4 drives + 1 spare. Storcli reports:

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EID:Slt DID State DG     Size Intf Med SED PI SeSz Model                  Sp Type
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252:0     3 Onln   0 5.457 TB SATA HDD N   N  512B WDC WD6002FRYZ-01WD5B1 U  -
252:1     5 Onln   0 5.457 TB SATA HDD N   N  512B WDC WD6002FRYZ-01WD5B1 U  -
252:2     6 Onln   0 5.457 TB SATA HDD N   N  512B WDC WD6002FRYZ-01WD5B1 U  -
252:3     7 Onln   0 5.457 TB SATA HDD N   N  512B WDC WD6002FRYZ-01WD5B1 U  -
252:4     4 UGood  - 5.457 TB SATA HDD N   N  512B WDC WD6002FRYZ-01WD5B1 U  -
----------------------------------------------------------------------------------

Details of slt 4 shows:

Drive /c0/e252/s4 Policies/Settings :
===================================
Enclosure position = 1
Connected Port Number = 4(path0)
Sequence Number = 3
Commissioned Spare = No
Emergency Spare = No

I would like to make drive 4 a global hot spare. Another post suggested using the command:

storcli /c0/e252/s4 add hotsparedrive

But how does that relate to "Commissioned Spare" vs "Emergency Spare" above. I just want this disk to be a spare in case any drive fails.

raid

1 Answers

  1. Best Answer

    Emergency Spare is a "last resort" spare when the controller uses a UGood drive or an otherwise incompatible global hot spare to rebuild the failed array. On some controller model this also activate the alarm sound.

    Commissioned Spare simply indicates if the disk is in active use as normal or emergency hotspare (ie: if another disk failed and this one took its place).

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