Re: Need advice on RAID5

Neil Greene <ngreene_at_SHL.com> wrote:

>George Dau wrote:
>> We had problems with a 10G dbase on a Sparc Storage Array 100
>> using the default raid config. Changed it to go over 10
>> disks instead of 4; and fixed the stripe length and it's fine.
>> Average writes are about 60ms with cache on.
>
>Ummmmmm, 4 drives and 10GB of data??? What size drives are these? Or
>were the data files smaller and the total database size was 10gb??
>

2gig drives. Yes, it doesn't fit. Our current production db is 10g total, but back then it was only about 2 gig. The 2 gig across 4 disks (700K per disk) was giving write times > 300 ms without much load. We now have 10gig over 10 disks and are still getting about 60ms writes, but there still isn't full load yet. Received on Sat Nov 11 1995 - 00:00:00 CET