| From: | "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com> |
|---|---|
| To: | "Luke Lonergan" <llonergan(at)greenplum(dot)com> |
| Cc: | "Rajesh Kumar Mallah" <mallah(dot)rajesh(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: setting up raid10 with more than 4 drives |
| Date: | 2007-05-30 04:41:46 |
| Message-ID: | 36e682920705292141k9aa038btb543d97cee0fa4a1@mail.gmail.com |
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| Lists: | pgsql-performance |
On 5/29/07, Luke Lonergan <llonergan(at)greenplum(dot)com> wrote:
> AFAIK you can't RAID1 more than two drives, so the above doesn't make sense
> to me.
Yeah, I've never seen a way to RAID-1 more than 2 drives either. It
would have to be his first one:
D1 + D2 = MD0 (RAID 1)
D3 + D4 = MD1 ...
D5 + D6 = MD2 ...
MD0 + MD1 + MD2 = MDF (RAID 0)
--
Jonah H. Harris, Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
33 Wood Ave S, 3rd Floor | jharris(at)enterprisedb(dot)com
Iselin, New Jersey 08830 | http://www.enterprisedb.com/
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