Re: RAID5 again

Posted in 1998

Topics: Performance & Tuning, Storage & Space Management

Paul Watson — Thu, 09 Apr 1998 09:21:10 +0100 — source: Informix-list mailing list archive (1991-1998)

Graham Bartlett wrote: > > Everyone's been talking about Raid5 and ODSv7.1 just when I was hoping to > build my databases on a Compaq 5500R with 5 4.3Gbyte disks.I'll have 60-80 > concurrent users with blobspaces. The current system running on mirrored > disks , is peaking at 20% of the current disk bandwidth. I want Raid for > the resilience, but am I going to suffer with reduced performance? > > -- > Graham Bartlett > If Emailing remove the X IMHO the simple answer is yes if you use RAID5 and no if you use RAID1. However, some of the RAID5 implementations that use large amounts of RAM for the write caching are not bad. But the same memory on RAID really flies. -- Paul Watson # WF Software Ltd # It said run using Windows 95 Tel: +44 1436 674629 # or better in the manual Fax: +44 1436 678693 # so I used Unix www.wfsoftware.co.uk #

Glossary

blobspace