Move 4 drives to new cabinet

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Move 4 drives to new cabinet

Postby nekton34 » Sat Apr 16, 2016 2:19 pm

I am thinking of moving four drives forming a raidz-1 pool in a working external cabinet (USB3) to a new external TB2 cabinet by the same maker. Is there any reason why this would not not go smoothly? And I suppose I should export the pool first.
Are there any gotchas?

TIA
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Re: Move 4 drives to new cabinet

Postby Brendon » Sat Apr 16, 2016 4:09 pm

You need to ensure that the drives are presented to the OS with the same block size by whatever controllers are in your cabinets. If they differ, the disks will likely be unreadable.
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Re: Move 4 drives to new cabinet

Postby nekton34 » Sat Apr 16, 2016 4:18 pm

Thanks for the advice. That's a serious gotcha. I think I'll set it up as a new pool with new drives (which I also have) and move the contents over.
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Re: Move 4 drives to new cabinet

Postby Brendon » Sat Apr 16, 2016 5:25 pm

Check with lundman, I think its harmless to try. If they fail to import, you know that you will have to do the copy.
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Re: Move 4 drives to new cabinet

Postby haer22 » Fri Apr 22, 2016 12:48 pm

Isn't this a performance issue rather than a show-stopper. "This" being 512B/sector or 4kB/sector.

Also, given that the cabinet is in JBOD/Single mode, isn't cabinets just a pass-thru, i.e. whatever the disk said was it's sector size before it would show up as the same.

Or am I missing something?

Brendon wrote:You need to ensure that the drives are presented to the OS with the same block size by whatever controllers are in your cabinets. If they differ, the disks will likely be unreadable.
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Re: Move 4 drives to new cabinet

Postby Brendon » Fri Apr 22, 2016 12:58 pm

No, the disk layout/format changes depending on the presentation. I have direct experience in this.

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