[GLLUG] Odd SATA Issue - slightly OT

[Alain D D Williams]

On Mon, Dec 24, 2018 at 08:51:09PM +0000, Greater London Linux UUG wrote:
> Hi Everyone,
> 
> I have an older centos 6 system that has 3 sata disks in soft raid5.
> I've noticed that the disk performance has become very poor.
> 
> I did several "dd if=/dev/sdX of=/dev/null count=10000" tests on the
> disks and found one of them performing around 1 MB/s while the
> others are at 150 MB/s or more.

A cheat fix attempt is to replace the power supply. These tend to fade over time
and can cause disks to play up - however I would have expected to see errors in
/var/log/messages

-- 
Alain Williams
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