On Tue, Aug 4, 2009 at 3:42 PM, George Herbert<[email protected]> wrote: > On Tue, Aug 4, 2009 at 1:30 PM, William Allen > Simpson<[email protected]> wrote: >> David Gerard wrote: >>> 2009/8/4 William Allen Simpson <[email protected]>: >>>> If you have to buy now, and are unlikely to upgrade for years, the current >>>> gold plated performance version is Sun ZFS over NetApp filers. >>> >>> Rilly? I thought they were comparable in performance but Sun was way >>> cheaper (hence the patent kerfuffle). >>> >> No idea myself. I'm just passing along comments verbatim. I'm pretty sure >> "gold plated" means expensive. And I'm pretty sure NetApp wouldn't stay in >> business long for "comparable" performance. So, a whole bunch of somebodies >> out there think that NetApp performance exceeds others. YMMV. >> >> Meanwhile, back at the ranch, the team needs to decide whether the 2 server, >> shared, pushme-pullyou variant, without Fiber Channel (or iSCSI or whatever), >> would perform well enough to meet current needs. > > All the modern filesystems (WAFL, ZFS) have odd behavior and slowdowns > as you approach full on the disk. I've got a bunch of multi-TB pools > on Sun X4500s serving NFS and local storage, with ZFS, and have seen > consistent stable performance if we keep them less than 70-80% full. > > If you want more consistent behavior near the edges plus snapshots, > you probably want to go buy Veritas / Symantec Foundation Suite - the > Volume Manager gives you multi-disk RAID and snapshots, and the VxFS > filesystem gives you growable and high-scale filesystems. >
Another option for a shared file system with tiered storage (and multiple-copy archive ability) is Sun SAM/QFS. It also has the nicety of being open sourced recently. Unfortunately, the open source version isn't ready for use. Also, native Linux support has always been kind of poor; however, you could always do SAM/QFS for tiered storage, and do pNFS (or NFSv4) for data access. V/r, Ryan Lane _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
