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- Path: sparky!uunet!olivea!sgigate!odin!sgihub!zola!zuni!anchor!olson
- From: olson@anchor.esd.sgi.com (Dave Olson)
- Newsgroups: comp.unix.aix
- Subject: Re: tape blocksizes (8mm - Exabyte)
- Message-ID: <pc7k34s@zuni.esd.sgi.com>
- Date: 3 Sep 92 02:20:54 GMT
- References: <199208282142.AA13606@cc.ysu.edu> <1992Sep2.161801.29010@awdprime.austin.ibm.com>
- Sender: news@zuni.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 20
-
- In <1992Sep2.161801.29010@awdprime.austin.ibm.com> woan@exeter.austin.ibm.com (Ronald S. Woan) writes:
-
- | I may be horribly wrong, but as I understand it, each pass of the head
- | on the 8mm lays down 1K, so use of blocksizes other than multiples of
-
- 8 Kbytes per 'track', not 1.
-
- | 1K leads to waste of tape. The RISC System/6000 can only boot tapes of
- | blocksize 512, so that's what mksysb uses...
-
- Yes, and that wastes half the tape, but is seldom an issue for booting.
-
- In general, any integral multiple of 1Kbyte will not waste tape on
- the Exabyte. In the event that you frequently underrun the drive,
- it is best to do multiples of 8K, although one would hope that
- you aren't going to do that often.
- --
- Let no one tell me that silence gives consent, | Dave Olson
- because whoever is silent dissents. | Silicon Graphics, Inc.
- Maria Isabel Barreno | olson@sgi.com
-