Hi Philippe,
Please take into account I have never administered such a system (always
simpler ones).
On 03/02/14 16:23, Philippe Schwarz wrote:
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Le 24/01/2014 08:30, Philippe Schwarz a écrit :
Asked many questions and had a few answers (thanks to elacunza).
But a single thread seems to be a no-go. I'm gonna slip it
Hardware relative questions :
I've got different offers from my reseller. Among many solutions, i've
got two in the last race :
1. A pair of Dell MD1200 (Disk enclosure with 12 SAS disks in a
stripped mirror) connected with SAS cables to each of the blades
(M620) in a M1000E enclosure.
Pros :
- -Simple
- - Max IOPS
- - Each storage is local for proxmox's point of view (Am i wrong ??)
Cons:
- -Difficult to scale : Up to three blades, it could be easy but after 4
ou 5 blades, there won't be enough ports on the SAS disk enclosure.
MD1200s 12 disk limit seems to fit quite nicely with 4-5 blades (2-3
mirrored disk each). Maybe you can scale-out having multiple proxmox
clusters, each with his blades and disk enclosures. This gives you a
cheaper start and more I/O bandwith.
I'd chose this, but don't know what growth you expect for the cluster...
also knowing what type of I/O do you expect would help. If you expect
high I/O then you should consider less VMs per disk...
In my experience usually the limit you hit first is disk I/O, especially
with spinning disks...
Just my 0.01¢
Cheers
Eneko
--
Zuzendari Teknikoa / Director Técnico
Binovo IT Human Project, S.L.
Telf. 943575997
943493611
Astigarraga bidea 2, planta 6 dcha., ofi. 3-2; 20180 Oiartzun (Gipuzkoa)
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