Re: [NOVICE] - SAN/NAS/DAS - Need advises

Hi everybody,

I have been reading this thread and I got the idea that
SANs to avoid, but would somebody please give a bit of
Comparison/perspective on NAS?

Regards,

Tena Sakai
tsakai(at)gallo(dot)ucsf(dot)edu

On 9/7/10 12:36 PM, "Craig James" <craig_james(at)emolecules(dot)com> wrote:

> On 9/7/10 12:06 PM, Jesper Krogh wrote:
>> On 2010-09-07 20:42, Scott Marlowe wrote:
>>> With the right supplier, you can plug in literally 100 hard drives to
>>> a regular server with DAS and for a fraction of the cost of a SAN.
>> Ok, recently I have compared prices a NexSan SASBeast with 42 15K SAS drives
>> with a HP MDS600 with 15K SAS drives.
>>
>> The first is 8gbit Fibre Channel, the last is 3Gbit DAS SAS. The
>> fibre channel version is about 20% more expensive pr TB.
>>
>> So of course it is a "fraction of the cost of a SAN", but it is a
>> fairly small one.
>
> Are you really comparing equal systems? "8gbit Fibre Channel" means a single
> Fibre Channel shared by 42 disks, whereas "3GBit DAS SAS" means 42 3gbit
> channels running in parallel. It seems like you'd really need some realistic
> benchmarks that emulate your actual server load before you'd know how these
> two systems compare.
>
> Craig
>