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- Newsgroups: comp.sys.next.sysadmin
- Path: sparky!uunet!cs.utexas.edu!convex!finger
- From: finger@convex.com (Jay Finger)
- Subject: Re: What's a better block size for a Fuji 520M drive?
- Message-ID: <1992Aug18.231820.948@convex.com>
- Sender: usenet@convex.com (news access account)
- Nntp-Posting-Host: mikey.convex.com
- Organization: CONVEX Computer Corporation, Richardson, Tx., USA
- References: <59698@mimsy.umd.edu> <1992Aug17.182637.9116@leland.Stanford.EDU>
- Date: Tue, 18 Aug 1992 23:18:20 GMT
- X-Disclaimer: This message was written by a user at CONVEX Computer
- Corp. The opinions expressed are those of the user and
- not necessarily those of CONVEX.
- Lines: 18
-
- In article <1992Aug17.182637.9116@leland.Stanford.EDU> m@crito.stanford.edu (M Carling) writes:
- >Not only for this Fujitsu, but for all SCSI hard drives, 1024 byte blocks
- >are better than (or in a few cases as good as) 512 byte blocks. The reason
- >is that the filesystem writes files in increments of 1K. Thus if the disk
- >is formatted to 512, blocks get used in pairs. There is an overhead cost
- >to be paid for this. Formatting the drive to 1024 byte blocks may yield a
- >capacity increase of up to 5%, and a performance increase smaller than
- >that.
-
- Will the NeXT support sector sizes greater than 1024 bytes? Since the sd
- driver reads/writes 8K chunks, might one find even better performance with
- 8K sectors?
-
- --
- ===============================================================================
- Jay Finger - finger@convex.com | Convex Computer Corp
- CONVEX System Integration and Support | 3000 Waterview Parkway
- Product Specialist | Richardson, TX 75083
-