Re: [OT] RAID controllers blocking one another?

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От Michelle Konzack
Тема Re: [OT] RAID controllers blocking one another?
Дата
Msg-id 20080118234546.GK2804@freenet.de
обсуждение исходный текст
Ответ на Re: [OT] RAID controllers blocking one another?  (Hannes Dorbath <light@theendofthetunnel.de>)
Список pgsql-general
Am 2008-01-18 16:54:17, schrieb Hannes Dorbath:
> Sean Davis wrote:
> >150-200MB/s writing and somewhat faster for reading
>
> That actually seems dead slow. Whatever RAID level you configured, there
> is no sane way for it to be that slow. Is this a RAID 5/6 array? Did you
> forgot to align your file system to stripe boundaries?

I have had such rates on a 3w85xx with 4+1 WD Raptor WD740 in Raid-5
(the OS was on a Raid-1 with 2+1 WD360)

The 3w95xx shoud do more, but with the new Hitachi 1 TByte I do not
get more then 140 MBit.  It seems, the drives are not so performant.

Thanks, Greetings and nice Day
    Michelle Konzack
    Systemadministrator
    Tamay Dogan Network
    Debian GNU/Linux Consultant


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