Re: Software RAID5 Horrible Write Speed On 3ware Controller!!

[Justin Piszcz <jpiszcz@lucidpixels.com>]

On Wed, 18 Jul 2007, Sander wrote:

> Justin Piszcz wrote (ao):
>> On Wed, 18 Jul 2007, Sander wrote:
>>> Justin Piszcz wrote (ao):
>>>> Its too bad that there are no regular > 4 port SATA PCI-e controllers
>>>> out there.
>>>
>>> Is there a disadvantage to using a SaS controller from for example
>>> lsi.com ?
>>>
>>> http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/index.html
>>>
>>> I haven't tried them yet, but on paper it looks like an option, no?
>>
>> Hmm that is also a good idea- but I am afraid there could be a
>> similiar issue where it tries to do weird caching stuff, even when the
>> drives are in JBOD. Unless they offer a !raid SAS controller that
>> supports SATA drives.
>
> I guess they are cheap enough to try (I haven't yet):
>
> PCIe:
> http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/lsisas3080xr/index.html
>
> PCI-X
> http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/lsisas3081er/index.html
>
> All SaS hardware (controllers, chassis, etc) support SATA disks AFAIK.
>
> I have good experience with the Supermicro 8-Port SATA Card
> http://www.supermicro.nl/products/accessories/addon/AoC-SAT2-MV8.cfm
>
> But that is PCI-X while you requested PCIe.
>
> 	With kind regards, Sander
>
> -- 
> Humilis IT Services and Solutions
> http://www.humilis.net
>


Those links are reversed, but thanks, checking them out now!

Justin.