Razique, Let's think of the following scenario, we use Nova to build an EC2-kind of compute cluster. For EC2, they offer
M1.Small = 1 vCPU + 1.7GB Mem + 160GB Disk M1.Medium = 2vCPU + 3.75GB Mem + 410GB Disk M1.Large = 4vCPU + 7.5GB Mem + 850GB Disk M1.ExtraLarge = 8.vCPU + 15GB Mem + 1.7TB Dsik ... This means that they at least have 1.7TB disk space on a physical server (presumably 2 x 1TB disk). What RAID option would we use in designing our cluster? For our Nova compute nodes, -- Do we have a JBOD configuration of 2 disks? -- do we have a RAID 0 of 2 disks? -- or do we use more enterprise like RAID 5? Thanks and hopefully this starts some discussion in this direction. Thanks, Sean On Fri, Jan 11, 2013 at 12:46 AM, Razique Mahroua <razique.mahr...@gmail.com > wrote: > Hi Sean, > I may be wrong, but I think there is not any "best" RAID strategy when it > comes to the disk for the nodes or a "normal" one. All RAID type have their > pros and cons. > It'a all about security over performance against total space that would > end up usable. What RAID controller is that? > > Regards, > *Razique Mahroua** - **Nuage & Co* > razique.mahr...@gmail.com > Tel : +33 9 72 37 94 15 > > > Le 11 janv. 2013 à 08:36, Sean Bigdatafun <sean.bigdata...@gmail.com> a > écrit : > > When I have a set of rack servers that is 1TB * 4 disks in each of it as > Nova Compute Node, what is the best RAID (or JBOD) strategy OpenStack > community recommend? > > Basically I'd like to know what a normal disk setup a compute node should > be using. > > Thanks, > Sean > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > > -- --Sean
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