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- Xref: sparky comp.compression:4837 comp.misc:5023
- Path: sparky!uunet!auspex-gw!wally
- From: wally@Auspex.COM (Wally Bass)
- Newsgroups: comp.compression,comp.misc
- Subject: Re: hard disk stacker?
- Message-ID: <16671@auspex-gw.auspex.com>
- Date: 28 Jan 93 18:14:09 GMT
- References: <1k4puvINN8nu@golem.wcc.govt.nz> <C1IzEB.2MJ@inews.Intel.COM>
- Sender: news@auspex-gw.auspex.com
- Followup-To: comp.compression
- Organization: Auspex Systems, Santa Clara
- Lines: 16
- Nntp-Posting-Host: auspex.auspex.com
-
- In article <C1IzEB.2MJ@inews.Intel.COM> jtan@cad071.NoSubdomain.NoDomain
- (Jeffrey Tan) writes (concerning the compression achieved by Stacker):
- > The average compression rate on most files is 1.7-1.8 times, not including
- >already compressed files, such as .zip and .gif. No further compression could
- >be done to those files.
-
- Although DIR listing don't show it, it might be worth keeping in mind that,
- with a Stacker drive, it is really Stacker that allocates physical disk space,
- rather than DOS. Typically, the DOS allocation unit is 2K (4 sectors), whereas
- the Stacker allocation unit is 1 sector. Therefore, particularly for small
- files, there can be a significant savings due to the 'allocation roundoff'
- phenomena, even when no savings occur as a result of actual data compression.
-
- Wally Bass
-
-
-