carroll@nprdc.navy.mil (Larry Carroll) (09/20/89)
My current configuration consists of an HP 9000/835 with 2 304MB and 2 404MB drives, and a 9145 (32-track) tape drive. Is it just me or is the 9145 a DOG??? After backuping up ~280MB (fbackup) it was very evident that an alternative was needed. Questions: 1. Does anyone have any experience backuping over a net to another tape drive attached to a node (e.g., Sun 4 --> 8mm SCSI tape drive)? 2. Does anyone have a port for the BSD program "rdump" --OR-- is there another dump program that supports remote dump? THIS IS PREFERRED TO USING A PIPE TO REMSH ... 3. Any other ideas/experiences? Please reply via direct email or posting to this net. Thanks in advance Larry Carroll Navy Personnel Research and Development Center San Diego, CA carroll@nprdc.navy.mil
rjn@hpfcso.HP.COM (Bob Niland) (09/21/89)
re: "My current configuration consists of an HP 9000/835 with 2 304MB and 2
404MB drives, and a 9145 (32-track) tape drive."
That's rather a lot to back up with a 134 Mbyte tape drive.
> Is it just me or is the 9145 a DOG???
What performance are you experiencing? It should be possible to approach
the 66 Kbytes/sec streaming transfer rate of the 9145A, and exceed it [net]
by compressing the data, but there are also several popular ways of falling
far short of these as well.
Regards, Hewlett-Packard
Bob Niland rjn%hpfcrjn@hplabs.HP.COM 3404 East Harmony Road
[hplabs|hpu...!hpfcse]!rjn Ft Collins CO 80525-9599darrylo@hpnmdla.HP.COM (Darryl Okahata) (09/21/89)
In comp.sys.hp, carroll@nprdc.navy.mil (Larry Carroll) writes: > 2. Does anyone have a port for the BSD program "rdump" > --OR-- is there another dump program that supports remote > dump? THIS IS PREFERRED TO USING A PIPE TO REMSH ... Well, the sources to GNU tar also come with the sources to a remote tape server (written at Berkeley). However, although you don't see it, GNU tar does a "hidden" rsh or remsh to the remote tape server machine to run the remote tape server program. -- Darryl Okahata UUCP: {hplabs!, hpcea!, hpfcla!} hpnmd!darrylo Internet: darrylo%hpnmd@hpcea.HP.COM DISCLAIMER: this message is the author's personal opinion and does not constitute the support, opinion or policy of Hewlett-Packard or of the little green men that have been following him all day.
rclark@speclab.bgp-usgs.gov (Roger N. Clark) (09/25/89)
> My current configuration consists of an HP > 9000/835 with 2 304MB and 2 404MB drives, and a > 9145 (32-track) tape drive. > Is it just me or is the 9145 a DOG??? After backuping > up ~280MB (fbackup) it was very evident that an > alternative was needed. When you mean DOG, how long did it take? I just finished backing up about 240 Mbytes with fbackup, 9-track 1600 bpi tape drive (6 full tapes). The tape drive flew the whole time, but with rewinds, mounting and unmounting tapes the elapsed time was 1-hour and twenty minutes. I have a 9145 about to go online, which I hope will give me more (unattended) backup service (changing one tape is easier than 5 changes with the 9-track). Better alternative: DAT when is it coming? I need it now (AND ON HPIB)! Roger N. Clark ..!speclab!rclark