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Recommendation for 6 sata disks for Vmware & HPdl380g6

Hello guys
Currently we're having 2x raid5 groups (3 disks each) and as expected the write performance is horrible.

We're looking for the best practice for raid with 6 disks which will be used mainly for Exchange, active directory and additional SQL based vm; all running on VMware vSphere.
Looking for good read/write ratio, and a single parity.
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Kerem ERSOY

What about a RAID 5+0 ?
Have you ordered the BBWC (Battery Backup Write Cache Module) for the Proliant?
it's normallly only available as standard on the Performance Models
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hanccocka what a sharp memory! Impressive.
No we haven't, since it's already equipped with 256mb unit.

Now, what would u suggest for the 6 disks new array? Will raid 10 be a good option?

Thx
Btw, how does raid 5+0 works? Pros/cons? I'm bot familiar with this array.
RAID 5 is an array RAID 5+0 is Two RAID5 arrays organized as RAID0 Disk Striping. First of all you'll need to check if your RAID adapter is capable of RAID 5+0 or RAID 50
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Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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Yeah but Raid 1+0 will leave you with half the capacity  problem :)

I never had a problem with poor performance with storage for any MS-SQL (Exchange empolys it) be it a makeshift NAS with 1 Gbps interface or an expensive SAN.

I'll suggest you to loook at mailbox system RAM (a db server uses memory to buffer transactions in memory and a background task writes them to the storage)


Yeah but Raid 1+0 will leave you with half the capacity  problem :)

I never had a problem with poor performance with storage for any MS-SQL (Exchange empolys it) be it a makeshift NAS with 1 Gbps interface or an expensive SAN.

I'll suggest you to loook at mailbox system RAM (a db server uses memory to buffer transactions in memory and a background task writes them to the storage)


Guys - I can live with half the capacity. Will the raid10 with 6 disks -reallife performance- be superior to raid 50? And the adapter support those configurations (p410i w/ 256mb).

Any other suggestions?
Is there a major performance impace when moving from 256mb to 512mb BBWC?
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What a gr8 detailed answer.
Many thanks
I'm still not convinced that with ONLY six disks that performance will change that much from RAID 5 to RAID 10 with SIX disks! But I could be proved wrong. Normally, you onlt start to see the benefits of performance with RAID 10 with lots of spindles. e.g, 10 or 14 DISKs.

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Many thx guys