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From: martelli@cadlab.sublink.ORG (Alex Martelli)
Newsgroups: comp.periphs.scsi
Subject: Re: SLOW WRITE ON OPTICAL ERASABLES
Keywords: OPTICAL, PERFORMANCE
Message-ID: <910@cadlab.sublink.ORG>
Date: 18 Jun 91 16:00:30 GMT
References: <1080@camco.Celestial.COM>
Organization: CAD.LAB, Bologna, Italia
Lines: 20

bill@camco.Celestial.COM (Bill Campbell) writes:
:I'm in the process of evaluating erasable optical drives.  The
	...
:	ctar -Cvf /mnt/tarfile /bin	# 0.5MB/Min, optical
	...
:Is this typical of erasable write speeds?  I expected them to be

We regularly archive expired news to a magneto-optical Maxtor drive,
with a "cpio -p" from the HP/UX box which runs our news to an
NFS-mounted erasable driven by a Sparcstation 1, at night (neither
machine is doing anything else, nor is there any other load on the
Ethernet).  We get LESS than 20 megabytes/hour (I have not analyzed
the details, but magnetic-disk to magnetic-disk "cpio -p"'s go SO
much faster that I feel certain that the drive, and possibly its
device-driver, are to be blamed for this "speed").
-- 
Alex Martelli - CAD.LAB s.p.a., v. Stalingrado 53, Bologna, Italia
Email: (work:) martelli@cadlab.sublink.org, (home:) alex@am.sublink.org
Phone: (work:) ++39 (51) 371099, (home:) ++39 (51) 250434; 
Fax: ++39 (51) 366964 (work only), Fidonet: 332/407.314 (home only).