Re: [SLE] PROBLEM WITH TAPE HARDWARE COMPRESSION

> > Also remember that you will never get 40G of data on the 20G tape using
> > compression. Binary files never compress 50% and actually compress very
>
> Neither of those statements are strictly true. I've seen ratios of 10:1
> or better. It all depends on the nature of the data that you are backing
> up. Now, I don't know if hardware compression can do quite that well,
> but gzip certainly can, and bzip is even better (although *far* more
> expensive).
>

RE: Hardware compression.

I have some highly compressable data I backup. Sometimes the tape
drive will just stop spinning for 30 seconds or more at a time. When
I look to verify nothing is broken I see that data is pumping out at
20 MB/sec or more, so it is the highly compressible nature of the data
that is allowing the tape drive to basically idle.

Greg
--
Greg Freemyer
The Norcross Group
Forensics for the 21st Century

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