From: John Rowe <rowe@excc.ex.ac.uk>
To: linux-raid@vger.kernel.org
Subject: Two-disk RAID5?
Date: Wed, 26 Apr 2006 17:41:47 +0100 [thread overview]
Message-ID: <1146069707.10253.50.camel@kenny> (raw)
I'm about to create a RAID1 file system and a strange thought occurs to
me: if I create a two-disk RAID5 array then I can grow it later by the
simple expedient of adding a third disk and hence doubling its size.
Is there any real down-side to this, such as performance? Alternatively
is it likely that mdadm will soon be able to convert a RAID1 pair to
RAID5 any time soon? (Just how different are they anyway? Isn't the
RAID4/5 checksum just an OR?)
Thanks
John
next reply other threads:[~2006-04-26 16:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-26 16:41 John Rowe [this message]
2006-04-26 17:18 ` Two-disk RAID5? Jon Lewis
2006-04-26 18:46 ` Tuomas Leikola
2006-05-05 1:22 ` Bill Davidsen
-- strict thread matches above, loose matches on Subject: below --
2006-04-26 18:58 Jansen, Frank
2006-04-26 19:22 ` Jon Lewis
2006-04-26 22:53 ` Neil Brown
2006-04-27 4:15 ` Al Boldi
2006-05-01 17:11 ` Erik Mouw
2006-05-05 1:18 ` Bill Davidsen
2006-05-05 9:31 ` John Rowe
2006-05-05 10:03 ` Neil Brown
2006-05-05 10:24 ` Erik Mouw
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