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. More disks and WAFL or ZFS ( just accepting a quota limit of 70% or something, to keep it from entering the misbehavior region) is probably cost-competitive, though. We're in the process of buying a bunch of X4540s with 48x500 GB drives; we expect to get something like 18 TB usable after RAID and hot spares and OS disks, and not to load them up past about 14 TB. About $28k each; less if you're an educational or charitable institution. The 750 GB and 1 TB drive options look attractive too. -- -george william herbert [email protected] _______________________________________________ Wikitech-l mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikitech-l
