[CentOS] using CentOS as an iSCSI server?

[Ross Walker]

On Oct 21, 2009, at 11:43 AM, John R Pierce <pierce at hogranch.com> wrote:

>
>> Say, I had 4 devices with 500 GB drives exported using iSCSI.  If a
>> single larger server
>> took those four iSCSI export drives, and created one md RAID 5  
>> device,
>> could a single
>> server be turned off, and just degrade the array until it was either
>> replaced entirely
>> or brought back online?
>>
>
>
> how long would it take to replicate and rebuild a volume  across the  
> LAN
> via iscsi?  if each of those slices was 500GB, you'd be reading 3 x
> 500GB and writing 500GB before the drive was resynched.   note, a  
> single
> drive on each storage controller in this scenario won't even achieve
> 1gigE speeds.

Worthy of testing just to see how it performs, but I definitely would  
stick with raid6 or 10 here.

-Ross