Re: RAID1 read balancing

From: Arjan van de Ven (
Date: Mon Feb 12 2001 - 04:34:10 EST

In article <> you wrote:

> For a RAID1 array built of two disks on two separate SCSI controllers,
> are the reads balanced between the two controllers (for higher speed) ?

With the current RAID1 setup, you will NOT get a speed increase for
single-threaded, sequential reading programs (read: benchmarks like hdparm
and tiobench)[1]. You will get improvents in all other cases.

   Arjan van de Ven

[1] This can be fix by a 10 line patch, however this changes the on-disk
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This archive was generated by hypermail 2b29 : Thu Feb 15 2001 - 21:00:18 EST