In article <3137470.1058867609@dbforums.com>, Mark Taylor <member20596@dbforums.com> wrote:
>
> get a faster tape solution
LTO's pretty quick, but LTO-1 requires you to use an intermediate disk pool
("disk staging area") of some sort because it's got terrible start/stop
performance characteristics.
Without a disk pool, we see about 1 MB/sec writes to LTO-1 tape, and with a
disk pool, about 22.5 MB/sec. LTO-2 (2nd gen LTO) is even better and also
has much better start/stop performance but still ideally, one wants to
stream from disk to tape at full speed with either generation of LTO tape
drives.
So...
clients->backup server[disk]->backup server[tape]
is still the best approach.
LTO start/stop performance is mentioned in an IBM white paper on LTO at:
ftp://ftp.software.ibm.com/software/...wp-tsm-lto.pdf
-Dan