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- Path: news.gpnet.it!news
- From: Mark Marin <megavolt@pop.gpnet.it>
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Iomega ZIP drive and AFS
- Date: Fri, 15 Mar 1996 21:44:38 +0100
- Organization: GP Net - Venezia - Italy
- Message-ID: <3149D6B6.44A1@pop.gpnet.it>
- References: <4ha8n7$8u2@sdaw04.seinf.abb.se>
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-
- Johan H=96gberg wrote:
- > =
-
- > When formatting a ZIP with AFS file system (AmiFileSafe) 88MB
- > becomes free.
- > When formatting a ZIP with FFS file system 95MB becomes free.
-
- >From what I have read, it sets aside room for directory files. THey are =
-
- all together so you get faster access to the files.
- =
-
- > The 95MB value is verified and true. 94 files of each 1024*1024
- > bytes was copied into 10 directories. After that there was
- > still 0.5MB free.
- > =
-
- > But with AFS 88MB is reported and it would seem strange
- > that 95MB would fit when 88MB is reported.
-
- It's a feature, not a problem! This is because AmigaDOS uses disk space =
-
- in 512 (or higher) chunks. A file that is 12 bytes long still takes up =
-
- 512 bytes. With AFS, it only uses the bytes it needs, since several =
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- files can all share that 512 byte `block'. So the files only take up as =
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- much space as they actually need, not rounded up to the nearest block. =
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- The RAM disk does this too - you can fit more there than you think, =
-
- especially if dealing with many small files.
- =
-
- What I am dying to know, how much faster is it with AFS? I am thinking =
-
- about getting it, but don't know what speed increase I will get on my =
-
- SCSI II drive (which is fast as it is). Also, can you set up your boot =
-
- drive with AFS? If it's not already booted, how can it read the drivers =
-
- or whatever off the boot partition? Can you use it for floppies too? How =
-
- fast are they? Can an AFS partition be used for Emplant Mac partitions =
-
- (Pseudo Mac drive from FFS is how most of us set it up).
-
- > Anyone familiar with this problem? Anyone having a clue?
-
- See above! I think there is a toggle that will let you see the actual =
-
- file size on AFS, or the Amiga DOS type size rounded up to the nearest =
-
- 512 bytes (so your archival, dir utility, etc. programs don't get =
-
- confused by the non-512 increment of the file size.)
- =
-
- Mark
-
-
-