Hello Jason,

Thursday, January 11, 2007, 12:46:32 AM, you wrote:

JJWW> Hi Robert,

JJWW> I read the following section from
JJWW> http://blogs.sun.com/roch/entry/when_to_and_not_to as indicating
JJWW> random writes to a RAID-Z had the performance of a single disk
JJWW> regardless of the group size:

>>Effectively,  as  a first approximation,  an  N-disk RAID-Z group will
>>behave as   a single   device in  terms  of  delivered    random input
>>IOPS. Thus  a 10-disk group of devices  each capable of 200-IOPS, will
>>globally act as a 200-IOPS capable RAID-Z group.


"random input IOPS" means random reads not writes.

-- 
Best regards,
 Robert                            mailto:[EMAIL PROTECTED]
                                       http://milek.blogspot.com

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