We have a HPDL380 G6 server ( running 2003 R2) with 1 failed disk and 1 predictive failure.

Total 4 Disks configured with RAID5.

I will be replacing disks, Now question is which disk should I replace first and why ?

Thank You JP


There is only one option: The failed disk. If you replace the "predictive failure" one first, you will have two missing disks in the array and loose all data.

Important: Make sure you have a current and tested backup pronto, before you do anything else. It's kind of likely the array will fail during recovery ...

BTW: The same order is necessary for a RAID6.

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  • 1
    He should replace them both. But indeed in the order you gave. – Tommiie Sep 6 '18 at 9:04
  • 1
    @Tom: I hope that this should be self-evident :) – Sven Sep 6 '18 at 9:07
  • I have a backup of the data, just wanted to be clear on order to replace disks. Failure is imminent due to server is been in this state for a while. – Jatin Patel Sep 6 '18 at 9:15
  • Oh, and get rid of 2003. This is EOL for three years now. – Sven Sep 6 '18 at 9:18

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