From: Andy Smith <andy@strugglers.net>
To: linux-raid@vger.kernel.org
Subject: Multiple SSDs - RAID-1, -10, or stacked? TRIM?
Date: Wed, 9 Oct 2013 12:31:35 +0000 [thread overview]
Message-ID: <20131009123135.GT1779@bitfolk.com> (raw)
Hello,
Due to increasing load of random read IOPS I am considering using 8
SSDs and md in my next server, instead of 8 SATA HDDs with
battery-backed hardware RAID. I am thinking of using Crucial m500s.
Are there any gotchas to be aware of? I haven't much experience with
SSDs.
If these were normal HDDs then (aside from small partitions for
/boot) I'd just RAID-10 for the main bulk of the storage. Is there
any reason not to do that with SSDs currently?
I think I read somewhere that offline TRIM is only supported by md
for RAID-1, is that correct? If so, should I be finding a way to use
four pairs of RAID-1s, or does it not matter?
Any insights appreciated.
Cheers,
Andy
next reply other threads:[~2013-10-09 12:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-09 12:31 Andy Smith [this message]
2013-10-09 13:00 ` Multiple SSDs - RAID-1, -10, or stacked? TRIM? Roberto Spadim
2013-10-09 13:27 ` David Brown
2013-10-09 13:52 ` Roberto Spadim
2013-10-09 14:46 ` Ian Pilcher
2013-10-09 16:21 ` David Brown
2013-10-09 17:33 ` Ian Pilcher
2013-10-09 18:04 ` Roberto Spadim
2013-10-09 19:08 ` David Brown
2013-10-09 20:35 ` SSD reliability; was: " Matt Garman
2013-10-09 21:17 ` David Brown
2013-10-09 21:46 ` Brian Candler
2013-10-10 6:14 ` Mikael Abrahamsson
2013-10-10 16:18 ` Art -kwaak- van Breemen
2013-10-10 9:15 ` Stan Hoeppner
2013-10-10 20:37 ` Andy Smith
2013-10-11 8:30 ` David Brown
2013-10-11 9:37 ` Stan Hoeppner
2013-10-11 8:42 ` David Brown
2013-10-11 11:00 ` Art -kwaak- van Breemen
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