Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on
| От | Bjoern Metzdorf |
|---|---|
| Тема | Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on |
| Дата | |
| Msg-id | 016901c291a9$0f23cc20$0564a8c0@toolteam.net обсуждение исходный текст |
| Ответ на | Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on ("scott.marlowe" <scott.marlowe@ihs.com>) |
| Ответы |
Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on
|
| Список | pgsql-performance |
> Generally RAID 5. RAID 1 is only faster if you are doing a lot of > parellel reads. I.e. you have something like 10 agents reading at the > same time. RAID 5 also works better under parallel load than a single > drive. yep, but write performance sucks. > The fastest of course, is multidrive RAID0. But there's no redundancy. With 4 drives I'd always go for raid 10, fast and secure > Oddly, my testing doesn't show any appreciable performance increase in > linux by layering RAID5 or 1 over RAID0 or vice versa, something that > is usually faster under most setups. Is this with linux software raid? raid10 is not significantly faster? cant believe that... Regards, Bjoern
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