Simon, thanks for your answer! I've checked all the client setting and they seem to be ok, no AV and nothing... Anyway: The strange point is, that if we're storing a Master Server's local volume to tape, it gives us about 40Mb/s to a single LTO3, storing the DSU results in 'bout 20Mb/s... whats wrong?
Besides this, I wonder if there are VERITAS customers that can really utilize a full LTO3 (70Mb/s) using network backups with multiplexing on a M$ Windows platform, any experience? I've read a tip 'bout using bpkar32 for testing purpose, I'll check this! Kind regards, Mirko On 15.09.2006, at 10:07, WEAVER, Simon wrote: > > Mirko > > Ok, well maybe we can compare things here, because I have been > using DSU's > to an HP EVA over fiber, and to be truthful, the throughput is > pants !!! In > fact, writing to LTO3 is BETTER than disk. > > I do think that writing to disks has been a poor experience for me, > and its > something I may not return to, because I cannot see where I am > going wrong!! > > Things to look at on the client: > > 1) If AV is running, turn it off > 2) If any Disk defrag / maintenance is taking place on the Server > (Disk > tune-ups, I/O other than backups), turn off > 3) If Tracker.exe is running on the client, turn it off. > 4) verify that the correct STU is being used for tape backups > 5) What type of files are being backed up? Small files are still no > good > (even on fiber its poor). > > Over fiber for a server will SMALL files, a 60GB partition can take > around > 1:30 - 2 hours over LAN Network direct to fiber attached LTO3 Drives. > > 2TB of Data on a SAN Media Server takes between 4 - 10 hours > (sometimes the > last stream can take 10 hours, again its mainly a lot of small > files on > here). > > HTH - gives some ideas and suggestions. I do NOT use 6.0 as it's a > little > buggy (Talk to Ed, he can go into details on this!). > > Regards > > Simon Weaver > 3rd Line Technical Support > Windows Domain Administrator > > EADS Astrium Limited, B23AA IM (DCS) > Anchorage Road, Portsmouth, PO3 5PU > > Email: [EMAIL PROTECTED] _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
