On 12/21/2013 07:45 PM, hemant burman wrote:
So 1GB RAM per OSD of Size 2TB(just re-iterating) is good enough? Because I read somewhere 1GB RAM/OSD of Size 1TB is whats recommended
Well, 1GB is really the minimum. As Mark suggested, go for 64GB since that probably isn't the most expensive part of the machine.
You could go for 32GB of 48GB, but more memory == better. Wido
-Hemant On Sat, Dec 21, 2013 at 11:55 PM, Wido den Hollander <wido@xxxxxxxx <mailto:wido@xxxxxxxx>> wrote: On 12/21/2013 05:31 PM, Mark Nelson wrote: I usually like to go a little higher than 1GB per OSD personally. Given what a box with 24 spinning disks costs, I'd be tempted to throw in 64G of ram, but 32GB should do ok.. Indeed. The benefit of having more memory is that the page cache can do it's job and reduce the amount of read IOps on the disks. Wido On 12/21/2013 09:22 AM, Ирек Фасихов wrote: recommended 1 GB of RAM on one OSD disk. 21 дек. 2013 г. 17:54 пользователь "hemant burman" <hemant.burman@xxxxxxxxx <mailto:hemant.burman@xxxxxxxxx> <mailto:hemant.burman@gmail.__com <mailto:hemant.burman@xxxxxxxxx>>> написал: Can someone please help out here? On Sat, Dec 21, 2013 at 9:47 AM, hemant burman <hemant.burman@xxxxxxxxx <mailto:hemant.burman@xxxxxxxxx> <mailto:hemant.burman@gmail.__com <mailto:hemant.burman@xxxxxxxxx>>> wrote: Hello, We have boxes with 24 Drives, 2TB each and want to run one OSD per drive. What should be the ideal Memory requirement of the system, keeping in mind that OSD Rebalancing and failure/replication of say 10-15TB data -Hemant _________________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> <mailto:ceph-users@xxxxxxxxxx.__com <mailto:ceph-users@xxxxxxxxxxxxxx>> http://lists.ceph.com/__listinfo.cgi/ceph-users-ceph.__com <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> _________________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> http://lists.ceph.com/__listinfo.cgi/ceph-users-ceph.__com <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> _________________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> http://lists.ceph.com/__listinfo.cgi/ceph-users-ceph.__com <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com> -- Wido den Hollander 42on B.V. Phone: +31 (0)20 700 9902 Skype: contact42on _________________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> http://lists.ceph.com/__listinfo.cgi/ceph-users-ceph.__com <http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com>
-- Wido den Hollander 42on B.V. Phone: +31 (0)20 700 9902 Skype: contact42on _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
