davetoo2

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davetoo2

6 Posts

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October 8th, 2014 07:00

Replacing failed disk in md1200

Hi

I have a failed disk in my md1200. It was part of a redundant virtual disk (raid5) with a hotspare. The virtual disk has been rebuilt with the hotspare and is showing status green. The failed disk is blinking amber in the md1200. There are no options to take the disk offline in OpenManage 7.4, just blink/unblink the drive. I am expecting a replacement disk tomorrow. The manual gives me two steps to replacing a disk in the above scenario, the first is:

1. Remove the failed disk. (!)

Can I simply press the release button and pull the drive out whilst the leds are blinking amber? Or do I need to do something else? The cli utility details a command to prepare a drive for removal, but gives no further explanation . . .

Any pointers would be helpful

Thanks

  • DELL-Sam L

    Community Manager

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    Posted October 8th, 2014 11:00

    Hello davetoo2,

    You can just pull the failed drive out of the MD1200 & then once your replacement drive has arrived you can insert it into the empty slot since your hotspare drive has finished the rebuild successfully. The drive should have powered down once the MD1200 marked it as failed but I have seen this happen a few times & pulling the drive should not harm your raid 5 virtual disk.

    Please let us know if you have any other questions.

  • davetoo2

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    Posted October 8th, 2014 07:00

    Extra info: The md1200 enclosing the failed drive is at the end of a daisy-chain with another md1200 which is itself connected to a Perc H800 adapter.

  • davetoo2

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    Posted October 8th, 2014 08:00

    And just for completeness here is the output of omreport for the failed disk:

    Thanks

    ID : 0:1:8
    Status : Non-Critical
    Name : Physical Disk 0:1:8
    State : Failed
    Power Status : Spun Up
    Bus Protocol : SAS
    Media : HDD
    Part of Cache Pool : Not Applicable
    Remaining Rated Write Endurance : Not Applicable
    Failure Predicted : Yes
    Revision : D1R5
    Driver Version : Not Applicable
    Model Number : Not Applicable
    T10 PI Capable : No
    Certified : Yes
    Encryption Capable : No
    Encrypted : Not Applicable
    Progress : Not Applicable
    Mirror Set ID : Not Applicable
    Capacity : 2,794.00 GB (3000034656256 bytes)
    Used RAID Disk Space : 0.00 GB (0 bytes)
    Available RAID Disk Space : 2,794.00 GB (3000034656256 bytes)
    Hot Spare : No
    Vendor ID : DELL(tm)
    Product ID : WD3001FYYG
    Serial No. :
    Part Number :
    Negotiated Speed : 6.00 Gbps
    Capable Speed : 6.00 Gbps
    PCIe Maximum Link Width : Not Applicable
    PCIe Negotiated Link Width : Not Applicable
    Sector Size : 512B
    Device Write Cache : Not Applicable
    Manufacture Day : 04
    Manufacture Week : 31
    Manufacture Year : 2013
    SAS Address : 50000C0F01D0D39E

  • davetoo2

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    Posted October 9th, 2014 04:00

    Hey Sam,

    Thanks for the answer, very reassuring. The disk has arrived, I've swapped out the failed one, and currently OpenManage is showing the new disk as 'replacing', which I presume means it is being populated with the data on the hot spare, which will revert back to being a hot spare one complete.

    Incidentally the time between the first SMART warning of impending disk failure and actual disk failure was about 30 minutes - which is quite short, especially at midnight!!

    Cheers