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perolinFlag for Switzerland

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HP Smart Array 421i: Better I/O Performance

Infrastructure:
HP DL380p G8
Smart Array P420i Controller with 512MB FBWC
vmWare ESXi 5.1,  SBS 2011

1. Issue
Up and running a Array RAID 5 with 3 x 600GB 10k SAS.
Now we add  3 x 600GB 10k.
How will we have better Perfomance?
a) Add these 3 Disks to the existing Array
b) A new Array RAID 5
c) Other solution

2. Issue
Installation of  2GB FBWC Option for P420i Controller.
That these bring Perfomance?
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David
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The answer ... it depends.   What is ratio of reads vs. writes vs. random vs. sequential?    Are you married to RAID5?  RAID10 will outperform RAID5 on every benchmark except for a few contrived I/O tests that pretty much never happen in the real world.
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mvirnoche
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