Hello,
we are currently running VCL on top of VMware ESXi 4.1 and are planning
to migrate to KVM. Main reason is that 4.1 does not support some of
newer OS-es (e.g. Win 8) and ESXi 5 memory limitations are too
restrictive for our servers.
Currently we have 4 VMware ESXi servers which are using iSCSI storage
for both datastore and vmstore. For datastore we benefit from the fact
that VMware VMFS is inherently clustered, i.e. i is able to mount same
LUN from multiple servers.
In case of KVM we obviously need to use something else, either NFS or
one of the server-less systems (e.g. GFS or OCFS). Our storage system
does not provide NFS interface so we would need to set up NFS servers.
This solution introduces another component (and cost) in system and we
would like to avoid it. With GFS we had some performance issues in the
past, and OCFS we haven't tested yet. We also considered using something
more exotic like MooseFS, Gluster or CEPH, however for all of them we
need to buy more servers, which is currently not an option.
I would like to kindly ask other KVM-based VCL instances to share their
experiences, what do you use for datastore?
Thanks in advance
--
Emir Imamagic
SRCE - University of Zagreb University Computing Centre, www.srce.unizg.hr
[email protected], tel: +385 1 616 5809, fax: +385 1 616 5559
