[Lustre-discuss] MDS failover: SSD+DRDB or shared 15K-SAS-Storage RAID with approx. 10 disks

Michael Kluge Michael.Kluge at tu-dresden.de
Sun Jan 22 11:04:45 PST 2012


I have been asked, which one of the two I would chose for two MDS 
servers (active/passive). Whether I would like to have SSDs, maybe two 
(mirrored) in both servers and DRDB for synching, or a RAID controller 
that has a 15K disks. I have not done benchmarks on this topic myself 
and would like to ask if anyone has an idea or numbers? The cluster will 
be pretty small, about 50 clients.

Regards, Michael

Dr.-Ing. Michael Kluge

Technische Universität Dresden
Center for Information Services and
High Performance Computing (ZIH)
D-01062 Dresden

Willersbau, Room WIL A 208
Phone:  (+49) 351 463-34217
Fax:    (+49) 351 463-37773
e-mail: michael.kluge at tu-dresden.de
WWW:    http://www.tu-dresden.de/zih

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