Re: ICH6, virtual raid 0+1 na 2 dyski

Autor: [B7] Yarii <yarii_at_wp.pl>
Data: Sat 04 Dec 2004 - 00:44:34 MET
Message-ID: <coqu11$d4n$1@nemesis.news.tpi.pl>
Content-Type: text/plain; charset=ISO-8859-2; format=flowed

insulation napisał(a):
> Czy ktoś może sprawdzał efektywność tego rozwiązania i wogóle jak to się
> kręci ?

dyski kręcą się tak samo szybko :
z googli....

CHARAKTERYSTYKA:
RAID 0+1 is implemented as a mirrored array whose segments are RAID 0 arrays

RAID 0+1 has the same fault tolerance as RAID level 5

RAID 0+1 has the same overhead for fault-tolerance as mirroring alone

High I/O rates are achieved thanks to multiple stripe segments

Excellent solution for sites that need high performance but are not
concerned with achieving maximum reliability

WADY :

  RAID 0+1 is NOT to be confused with RAID 10. A single drive failure
will cause the whole array to become, in essence, a RAID Level 0 array

Very expensive / High overhead

All drives must move in parallel to proper track lowering sustained
performance

Very limited scalability at a very high inherent cost

-- 
[B7] Yarii
yarii.at.wp.dot.pl
Received on Sat Dec 4 00:45:19 2004

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