You really have to specify the details of your workload and the needed response time for a good answer.
If you're doing single-threaded, large-block, sequential I/O with no bursty behavior. The short answer is, no. Otherwise, "It depends."
The White paper: EMC CLARiiON Best Practices for Performance and Availability, FLARE Revision 28.5 discusses RAID group utilization in its RAID groups section. It also describes how to calculate RAID group IOPs in its Sizing and Performance Planning section. This document is available on PowerLink.
I wanted to tell you some numbers in terms of IOps, but jps00 is s all mentioned in the WP he mentioned.
An RG of 13 disks should be able to do 13 x about 75 IOps = 975 IOps, but it all depends on the I/O size as well, so it depends on what your IO pattern is.
Are these 1TB drives 7k2 rpm or the 5k4 rpm ones ? It's clear (I hope) that the 5400 type has about 3/4 of the IOps potential compared to the 7200 rpm's.
jps00
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October 20th, 2009 08:00
That depends.
You really have to specify the details of your workload and the needed response time for a good answer.
If you're doing single-threaded, large-block, sequential I/O with no bursty behavior. The short answer is, no. Otherwise, "It depends."
The White paper: EMC CLARiiON Best Practices for Performance and Availability, FLARE Revision 28.5 discusses RAID group utilization in its RAID groups section. It also describes how to calculate RAID group IOPs in its Sizing and Performance Planning section. This document is available on PowerLink.
RRR
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October 21st, 2009 02:00
An RG of 13 disks should be able to do 13 x about 75 IOps = 975 IOps, but it all depends on the I/O size as well, so it depends on what your IO pattern is.
RRR
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October 21st, 2009 02:00