"Tony Sceats" <[EMAIL PROTECTED]> writes:
> Performance depends specifically on the job at hand, and whilst short on
> detail, I would suspect that you want fast file systems and disks optimised
> for write speed,
For backups? Often you need very fast reads, either to feed a modern
tape streamer at the 30 to 80 MB per second of data it wants[1], or to
be able to perform "read and compare" operations on existing data for
comparison or pooling purposes (or even just the metadata of millions of
files, really.)
Fast writes are typically the least important part of the backup
system. They matter, sure, for beating your backup window, but the
actual performance problems often pop up on the read side. In my
experience, anyhow. :)
Regards,
Daniel
Footnotes:
[1] ...and more if you have two or three of these drives attached to a
single server, which is more common as we have individual machines
with one to two tapes capacity each -- even for the 800MB native
LTO4 devices.
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