Re: Xfs delaylog hanged up

Stan Hoeppner
2010-11-24T01:39:09Z

Spelic put forth on 11/23/2010 6:36 PM:
> On 11/23/2010 11:48 PM, Emmanuel Florac wrote:
>> So Spelic, you're using the 3Ware as a SATA controller, but not a RAID
>> controller? This is quite unexpected, though going with md
>> instead provides better IOPS.
>>
>
> Yep, because I know MD better, I can see the code, it's more flexible
> and customizable, can be controlled with scripts more easily... Also
> parameters to the underlying drives can be controlled if I use MD, and
> it's easier to align filesystem to stripes. Also my time is better spent
> learning it as MD won't change the next time I buy a different hw
> controller.
> What would be the advantage of using hardware raid?

If there is no advantage then why buy an $800+ real hardware RAID card
and then deploy it as a vanilla SAS/SATA HBA with software RAID? What a
waste of a decent RAID card...

You could have gone with two of these instead
http://www.newegg.com/Product/Product.aspx?Item=N82E16816117157

saving ~$500 and having similar if not slightly better performance with
software RAID.

--
Stan