[CentOS] new "large" fileserver config questions

[Rafa Griman]

Hi :)

On Tue, Oct 2, 2012 at 6:57 AM, John R Pierce <pierce at hogranch.com> wrote:
> On 10/01/12 8:39 PM, Keith Keller wrote:
>> The controller node has two 90GB SSDs that I plan to use as a
>> bootable RAID1 system disk.  What is the preferred method for laying
>> out the RAID array?
>
> a server makes very little use of its system disks after its booted,
> everything it needs ends up in cache pretty quickly.  and you typically
> don't reboot a server very often.   why waste SSD for that?
>
> I'd rather use SSD for something like LSI Logic's CacheCade v2 (but this
> requires you use a LSI SAS raid card too)

Just add to this comment that you can also use the SSD drives to store
the logs/journals/metadata/whatever_you_call_it.

As an example, with XFS you would use the -l option.

   Rafa