bart.coninckx at telenet
Mar 8, 2012, 11:35 PM
Post #5 of 6
thx, that's reaussuring. I was not planning on using RAID though, the
SSD would just be there for Dom0 and all the OS partitions of the DomUs.
I may not got to the 4 years this way, but Ii hope to be able to get to
at least have of that or something,
On 03/08/12 12:10, Christoph Roethlisberger wrote:
> We are using consumer grade SSD drives in a few of our servers for 4+
> years now. (started with MTRON devices, switched to Intel later on and
> lately also some Samsung drives)
> Though we just started using SSD drives as DRBD backend storage
> (hardware RAID6 - thus no TRIM anyways) we use similar configurations
> in storage arrays for high IO performance virtual machines. (ESX mostly)
> So far we had zero problems with it and no measurable performance
> degradation and only one drive from the 100+ we have, failed so far.
> Though this happened already after one of two weeks in operation and
> was an electronic problem and not due to NAND wear out.
> As long as the drives have some internal GarbageCollection (as most do
> nowadays) and you make sure that they do never fill up completeley
> (normally we format such arrays to a max of 90% of available space)
> the absence of TRIM can be neglected in my opinion.
> As far as TRIM support in DRBD goes - I don't know.
> LVM may support it already in RAID0/1 setups, but MDRaid nor any
> hardware RAID does it, (and hardware raid support may never ever
> come/work beside raid0/1 setups) so this limits the use of TRIM
> support in DRBD quite much.
>> Hi all,
>> I was wondering if anyone is successfully SSD drives as their backend
>> storage devices. If so, I'm wondering if these drives do no degrade
>> quite fast seen there is no TRIM support in DRBD.
>> I'm also wondering if can motivate people to help sponsor this
>> feature. If the group is large enough, I suppose we can get this done
>> for not too much money.
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