From: Lars Marowsky-Bree <lmb@suse.de>
To: Hermann Himmelbauer <dusty@strike.wu-wien.ac.at>,
maarten van den Berg <maarten@vbvb.nl>,
Mario Giammarco <mgiammarco@virgilio.it>,
linux-raid@vger.kernel.org
Subject: Re: RAID1 VS RAID5
Date: Mon, 27 Oct 2003 10:54:34 +0100 [thread overview]
Message-ID: <20031027095434.GB13640@marowsky-bree.de> (raw)
In-Reply-To: <200310270927.32751.dusty@strike.wu-wien.ac.at>
On 2003-10-27T09:27:32,
Hermann Himmelbauer <dusty@strike.wu-wien.ac.at> said:
> When reading a file from the RAID1, you could e.g. read the first block from
> the first disk, the second from the second disk, the third from the first
> disk and so on.
>
> This would *theoretically* double the read speed - like with RAID0.
For pure reads, that may be true. But for writes, the disks have to
resynchronize their heads and then you would get a penalty there.
It all depends ;-)
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering \ ever tried. ever failed. no matter.
SUSE Labs | try again. fail again. fail better.
Research & Development, SUSE LINUX AG \ -- Samuel Beckett
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next prev parent reply other threads:[~2003-10-27 9:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-26 14:45 RAID1 VS RAID5 Mario Giammarco
2003-10-26 16:16 ` maarten van den Berg
2003-10-26 18:22 ` Mario Giammarco
2003-10-27 8:27 ` Hermann Himmelbauer
2003-10-27 9:54 ` Lars Marowsky-Bree [this message]
2003-10-27 10:16 ` Jeff Woods
2003-10-28 10:45 ` Mario Giammarco
2003-10-27 11:08 ` maarten van den Berg
2003-10-27 12:03 ` Jeff Woods
2003-10-26 16:55 ` Matti Aarnio
2003-10-28 10:46 ` Mario Giammarco
2003-10-27 8:33 ` Hermann Himmelbauer
2003-10-27 9:19 ` Gordon Henderson
2003-10-27 11:01 ` Hermann Himmelbauer
2003-10-27 13:40 ` Gordon Henderson
2003-10-27 15:34 ` Hermann Himmelbauer
2003-10-27 14:17 ` Lars Marowsky-Bree
2003-10-27 15:52 ` Andrew Herdman
2003-10-28 10:40 ` Mario Giammarco
-- strict thread matches above, loose matches on Subject: below --
2003-10-26 11:24 Mario Giammarco
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