[Beowulf] NFSoIB and SRP benchmarking

[holway at th.physik.uni-frankfurt.de]

> Do the machines have built in controller in the motherboard,
> or do they have a pci-e card that's hosting the disks?

We shall probably use a few of the MegaRAID 9280 controllers in
passthrough mode. These are capable of handling 2 or 3 GB/s.

It depends on what the vendor supports really.



>
>  From those pci-e cards there is plenty of benchmarks around, and
> basically
> they all struggle to get nearby 1GB/s bandwidth.
>
>  From the motherboards i see 0 benchmarks putting disks on them and
> measuring aggregated bandwidth.
>
> Which chip is on the motherboard doing that and how many disks can it
> host?
>
> On Aug 27, 2012, at 3:55 PM, holway at th.physik.uni-frankfurt.de wrote:
>
>>
>>> So my simple question would be: is this better with the built in raid
>>> controllers that most motherboards have as they can use
>>> the fast 2.5Ghz Xeon cpu's?
>>
>> Im not going to be doing any hardware RAID. ZFS does everything in
>> software.
>>
>>
>>
>>
>>
>
>