bill@camco.Celestial.COM (Bill Campbell) (06/14/91)
I'm in the process of evaluating erasable optical drives. The
first drive I've installed is a Ricoh RO-5030E2, and I'm
surprised at how slow it is writing. I ran a short tar job
to compare speeds with ctar's final report.
ctar -Cvf /mnt/tarfile /bin # 0.5MB/Min, optical
ctar -Cvf /tmp/tarfile /bin # 3.1MB/Min, CDC Wren 675MB hd
ctar -Cvf /dev/rct0 /bin # 4.1MB/Min, Archive 150MB SCSI tape
ctar -Cvf /dev/null /bin # 26.1MB/Min, Maximum possible
Is this typical of erasable write speeds? I expected them to be
slow, but not this slow! Even removing a file from a directory
seems to take a long time while it updates the directory entry.
Bill
--
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