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Ulf Borjesson
1 Copper

Perc 6 i config

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I wanted some advice on how to best configure my PERC 6i controller. Currently there is 8 SAS 146GB drives in the system. 
2x146 Raid 1 C drive (OS)
5x146 Raid 5 D drive (Data Storage)
1x146 No Raid E drive(Cache)

The reason I am asking is because of high disk transfer numbers especially on the C drive. Would it be beneficial to use all 8 drives in a raid 5 configuration? Would that improve performance?
 I changed the policy from write through to write back and it seemed to help some. The system is mostly used for read access during business hours and only updated nightly.
The server in question is a R710 with 36 GB of ram 2 x quad core cpu.
Any advice would be appreciated.
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Dev Mgr
6 Gallium

Re: Perc 6 i config

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I don't believe the PERC6i has been validated for SSD. This doesn't mean it won't work, but you are on your own to try and figure out if it'll work. Dell added SSD support with the newer PERC H700 raidcontroller.

Member since 2003

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Moderator

Re: Perc 6 i config

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The current configuration is the best from a performance and stability standpoint. If you run into any issues with the OS and have to resintall, it is much easier if the data is located and safe on another array. If you create a single raid 5, then you don't have that seperation. So in the long run it its more benificial to seperate them into there own arrays.

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Ulf Borjesson
1 Copper

Re: Perc 6 i config

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Does this system support to have SAS drives and SSD's on the same bus? Does SSD's imporve preformance on this system?

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Dev Mgr
6 Gallium

Re: Perc 6 i config

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I don't believe the PERC6i has been validated for SSD. This doesn't mean it won't work, but you are on your own to try and figure out if it'll work. Dell added SSD support with the newer PERC H700 raidcontroller.

Member since 2003