questions about SSDs and IBM i -- MIDRANGE-L

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Subject: questions about SSDs and IBM i
From: Mark Waterbury <mark.s.waterbury@xxxxxxxxxxxxx>
Date: Mon, 7 Jul 2025 15:55:41 +0000 (UTC)
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Hi, All,

Modern Power9 / Power10 machines come with NVMe now, but I am working with a few folks who have older (P7, P8) equipment who may decide to "upgrade" from spinning disks to SSDs.

Do you think it is better to use mirrored pairs, versus RAID? I have heard and read opinions that RAID-5 or RAID-6 may "ruin" the "wear leveling" of SSDs. Is that just rumor or speculation?

Or, perhaps just use mirrored pairs with SSDs?

Any opinions or advice in this regard?

Thanks in advance,

Mark S. Waterbury

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Follow-Ups:

Re: questions about SSDs and IBM i , Patrik Schindler
Re: questions about SSDs and IBM i , Rob Berendt

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