Re: With 4 disks should I go for RAID 5 or RAID 10
| От | Fernando Hevia |
|---|---|
| Тема | Re: With 4 disks should I go for RAID 5 or RAID 10 |
| Дата | |
| Msg-id | 0f8201c847f6$08e15090$8f01010a@iptel.com.ar обсуждение |
| Ответ на | Re: With 4 disks should I go for RAID 5 or RAID 10 (Mark Mielke <mark@mark.mielke.cc>) |
| Ответы |
Re: With 4 disks should I go for RAID 5 or RAID 10
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| Список | pgsql-performance |
Mark Mielke Wrote: >In my experience, software RAID 5 is horrible. Write performance can >decrease below the speed of one disk on its own, and read performance will >not be significantly more than RAID 1+0 as the number of stripes has only >increased from 2 to 3, and if reading while writing, you will not get 3X as >RAID 5 write requires at least two disks to be involved. I believe hardware >RAID 5 is also horrible, but since the hardware hides it from the >application, a hardware RAID 5 user might not care. >Software RAID 1+0 works fine on Linux with 4 disks. This is the setup I use >for my personal server. I will use software RAID so RAID 1+0 seems to be the obvious choice. Thanks for the advice!
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