Raid 10, one failed Drive can I replace with different brand?

By philldmc ·
I have a RAID 10 using SATA drives. One drive has failed. It is a Seagate ST350032 (500gb, 7200, 32mb Cache), all four drives in the RAID are ST350032.

I can not get this drive, however I can locally get a Western Digital 1TB drive, 7200, 32mb Cache) do you see any problems mixing brands on this RAID?

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RE: do you see any problems mixing brands on this RAID?

by OH Smeg Moderator In reply to Raid 10, one failed Drive ...

Only wasting money.

If you insert a 1 TB Drive into a Array that is using 500 GIG Drives it will be repaired to only use 500 GIG of it's capacity.

I would suggest replacing the failed drive with a 500 GIG Drive to not waste hardware or money. Seagate Drives are a Standard Size so any drive of the same size will work.

It's only some Hitachi Drives that are a screwy size that cause problems in RAID Arrays.


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off by one byte

by philldmc In reply to RE: [i]do you see any pro ...

It has always been my understanding that you always replace a failed drive with either the same exact model or a larger one.

I've been told, that if the replacement drive is even one byte smaller the RAID will not rebuild correctly. Need to be the exact same size or larger..is this not correct?

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RE: ..is this not correct?

by OH Smeg Moderator In reply to off by one byte

Yes it is but unless you where using a Hitachi Drive which are strange sizes any replacement 500 GIG Drive will work here.

The overall size is what is important here not the Cache, the HDD Rotational speed or anything else just the size of the drive.


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