Data Backup and Recovery

sqlio results local disk vs netapp

sraja2005
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Just to test, I ran SQLIO

on a windows 2008 box (DL785) local disk (4x300G, RAID 10)  vs a Netapp aggregate of 56 disks. Filer is running 7.2.6.1, this is a FC LUN.  Aggregate is not really that loaded.

Surprisingly to me, the results show the C drive to be faster.  I know there are various ways to tweak SQLIO but I still find this odd.  Any suggestions would be appreciated:

SQLIO: 1 thread reading for 30 secs using 2KB IOs over 128KB stripes with 64 IOs per run:

Local C:\     [sqlio -dC]

IOs/sec:  5844.79
MBs/sec:    11.41

Netapp F:\    [sqlio -dF]

IOs/sec: 2547.88
MBs/sec:     4.97

SQLIO: 1 thread writing for 30 secs using 2KB IOs over 128KB stripes with 64 IOs per run:

Local C:\    [sqlio -kW -dC]

IOs/sec: 10116.73
MBs/sec:    19.75

Netapp F:\    [sqlio -kW -dF]

IOs/sec:  1895.42
MBs/sec:     3.70

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