Re: using CentOS as an iSCSI server?

[Chan Chung Hang Christopher <christopher.chan@xxxxxxxxxxxxxxx>]

Jonathan Moore wrote:
> On Wed, Oct 21, 2009 at 7:51 AM, Les Mikesell <lesmikesell@xxxxxxxxx> wrote:
>   
>> You can, if you connect the iscsi block devices into one machine that can
>> combine them in one or more md raid devices, put a filesystem on them, and
>> export via nfs and/or smb to the systems that want shared space.  However, the
>>     
>
> If you did this, took a handful of machines, exported their storage
> via iSCSI and had
> a single server taking each of those iSCSI exported drives and
> combining into a single
> giant md device, would the theory of redundancy still hold?
>
> 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?
>
>   

I suspect so. After all, it is just seen as a disk as far as md is 
concerned and it will do the same normal thing if you unplugged a single 
disk from the array.
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