[Pc_Support] Re: Backing up 1-4TiB: LTO-3, SDLT or SAIT? -- corrections/addendeum

[Bryan J. Smith]

"Bryan J. Smith" <b.j.smith at ieee.org> wrote:
> BTW, I'm considering the HP 1/8 Autoloader with an Ultrium
> 960 drive, so native capacity is 3.2GiB with a 80GBps
> transfer rate over Ultra320 SCSI.

Er, that should read "native 3.2*T*iB [aggregate] capacity" 
with a "80*M*Bps [native] transfer rate" (doh!).  Typical
performance with 2:1 compression results in around 160MBps,
which is enough to saturate even the 1Gbps GbE "out-of-band"
links I'm planning on using between the NetBackup server and
its agent systems.

Although I plan on using buffering and delaying committal to
tape.  In fact, I think another benefit of LTO is that it can
do variable write speeds, so it can "slow down" to
accommodate the incoming stream.  I haven't researched AIT,
but I don't think DLT can do that.



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