Re: Software vs Hardware RAID 10?
Alex Samad <alex@samad.com.au> writes:
> On Mon, Aug 27, 2007 at 10:31:17AM -0600, Cedar Myers wrote:
>> Neil Gunton wrote:
>>> I'm curious as to whether anyone has experience of software RAID in
>>> Linux giving better overall performance on RAID10 than a RAID card such
>>> as the Adaptec 2015S.
>>>
>>> Server: Dual Opteron 265, 1.8GHz, i.e. 4 cores total, 4GB RAM, 4x10k
>>> Fujitsu SCSI 73GB, Adaptec 2015S zero-channel RAID card.
>>
>> 1. When it comes to disk IO, especially with things like databases, the
>> disk vendors' information seems fairly solid that it's worth going with
>> 15k rpm disks. What I was reading about was a >10 disk system, so I
> yeah I think the idea is the faster the disc spin the more data that goes past
> the read head, thus the faster the data is taken off and provided tot he system
The faster the disk spins the faster the right data has rotatet below
the head and can be read/written. If you write small chunks of data
then seeking can be far more important.
MfG
Goswin
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