Thanks for your note: Re type of 7xxx system: It is mostlikely a 7310 with one tray, two if we can squeeze it in.
Each tray will , we hope be 22x1TB disks and 2x 18GB SSDS. In a private response to this I got: >> With SSD it performs better than the Thumper. My feeling would be two >> trays plus two heads...4 read SSDs and 1 write SSD per tray should >> outperform 3-4 Thumpers. Thanks for the failover reference. And thanks for mentioning backups :we use networker and if we cannot install the networker client, we need to enable ndmp on the backup server. I will investigate. Len Zaifman Systems Manager, High Performance Systems The Centre for Computational Biology The Hospital for Sick Children 555 University Ave. Toronto, Ont M5G 1X8 tel: 416-813-5513 email: leona...@sickkids.ca ________________________________________ From: darren.mof...@sun.com [darren.mof...@sun.com] On Behalf Of Darren J Moffat [darr...@opensolaris.org] Sent: November 18, 2009 12:10 PM To: Len Zaifman Cc: storage-disc...@opensolaris.org; zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] X45xx storage vs 7xxx Unified storage Len Zaifman wrote: > We are looking at adding to our storage. We would like ~20TB-30 TB. > > we have ~ 200 nodes (1100 cores) to feed data to using nfs, and we are > looking for high reliability, good performance (up to at least 350 MBytes > /second over 10 GigE connection) and large capacity. > > For the X45xx (aka thumper) capacity and performanance seem to be there (we > have 3 now) > However, for system upgrades , maintenance and failures, we have an > availability problem. > > For the 7xxx in a cluster configuration, we seem to be able to solve the > availability issue, and perhaps get performance benefits the SSD. > > however, the costs constrain the capacity we could afford. > > If anyone has experience with both systems, or with the 7xxx system in a > cluster configuration, we would be interested in hearing: > > 1) Does the 7xxx perform as well or better than thumpers? Depends on which 7xxx you pick. > 2) Does the 7xxx failove r work as expected (in test and real life) Depends what your expectations are! The time to failover depends on how you configure the cluster and how many filesystems you have and how many disks etc etc. Have a read over this blog entry: http://blogs.sun.com/wesolows/entry/7000_series_takeover_and_failback > 3) Does the SSD really help? For NFS yes the WriteZilla (slog) really helps because of how the NFS protocol works. For ReadZillia (l2arc) it depends on your workload. > 4) Do the analytics help prevent and solve real problems, or arui?he ge they > frivolous pretty pictures? Yes they do, at a level of detail no other storage vendor can currently provide. > 5) is the 7xxx really a black box to be managed only by the GUI? GUI or CLI but the CLI is *NOT* a Solaris shell it is a CLI version of the GUI. The 7xxx is a true appliance, it happens to be built from OpenSolaris code but it is not a Solaris/OpenSolaris install. So you can't run your own applications on it. Backups are via NDMP for example. I highly recommend downloading the simulator and trying it in VirtualBox/VMware: http://www.sun.com/storage/disk_systems/unified_storage/ -- Darren J Moffat This e-mail may contain confidential, personal and/or health information(information which may be subject to legal restrictions on use, retention and/or disclosure) for the sole use of the intended recipient. Any review or distribution by anyone other than the person for whom it was originally intended is strictly prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
