Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!rpi!batcomputer!rogerj From: rogerj@batcomputer.tn.cornell.edu (Roger Jagoda) Newsgroups: comp.unix.questions Subject: Tape backups and Disk management Message-ID: <9782@batcomputer.tn.cornell.edu> Date: 23 Feb 90 02:31:24 GMT Reply-To: rogerj@tcgould.tn.cornell.edu (Roger Jagoda) Organization: Cornell Theory Center, Cornell University, Ithaca NY Lines: 33 Folks, I know this can't be too hard, but NO ONE in Unix-land seems to know what I'm talking about. I'm a converted (truly!) PC guru used to working with Novell Lans and 386s. Now I work on Unix workstations. Under trusty old DOS, I sometimes had problems with disk fragmentations. In other words, files became scattered all over the disk and head performance suffered on seeks of the random data. Now, the same problem exists under UNIX, but with DOS systems I have my choice of 6 or 7 GOOD disk managers/defragmentors. Under UNIX, there doesn't seem to be ANYTHING (or if there is could someone point me towards it). Performance still sufferes but you'd think the UNIX world would have access to the same tools as the DOS (Dumb OS?) world...wouldn't you? Another somewhat silly question. We're using dump for our backups. I ahve heard of BRU and CTAR. Has anyone used these and found them satisfactory? Their priced within our range, I just wanted to get some feedback before buying. BTW, what does "dd" do so well that people tell me I should use that for tape backup instead? The man page clearly shows it for a file conversion utility, such as EBSIDIC to ASCII. Why would I want to use this in tape backups? Just asking...tar seems good enough, although, again, under the DOS world, I have my choice of several GOOD programs for disk management/compression-backup. I just can't under- stand why the UNIX world has such a dearth of similar software..I guess everyone just likes to write their own! Seems fun enough! Thanks in advance! --Roger Jagoda --Cornell University --FQOJ@CORNELLA.CIT.CORNELL.EDU