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From: fwhite@bbn.com (Fred White)
Newsgroups: comp.sys.next
Subject: Disk transfer rates
Message-ID: <64618@bbn.BBN.COM>
Date: 11 Jun 91 21:31:54 GMT
Sender: news@bbn.com
Reply-To: fwhite@BBN.COM ()
Distribution: usa
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 33


 I've been able to glean the following measurements of disk speed on
an 040 NeXT from back issues of comp.sys.next.  I was wondering if
anyone has the corresponding numbers for the Maxtor 8380S and 8780S
and the Seagate ST1480?  I'm trying to narrow down what disk to buy.
Thanks!

Disk                            Transfer rate (read)
--------------------		--------------------
Micropolis 1588-15 		1.2MB/s
QUANTUM LP105S			926172 bytes/s
FUJITSU M2263S-512		841499 bytes/s		(SCSI-2 mode)
FUJITSU M2263S-512		771374 bytes/s

The benchmark:

sylvester> sudo disk /dev/rsd0a
disk name: QUANTUM LP105S 910109405
disk type: fixed_rw_scsi
Disk utility

disk> read
starting block? 0
# sectors per transfer? 16
number of transfers? 1000
sector increment? 16
16384000 bytes in 17690 ms = 926172 bytes/s
disk> quit

Fred White            Bolt, Beranek, and Newman, Inc.
fwhite@bbn.com	      150 CambridgePark Drive
617 873-3536          Cambridge, MA 02140
617 873-8202 (fax)