| Rob Turk 2004-12-10, 2:45 am |
| "T.B." <balfour@donotsendme.unsolicitedmail.grandecom.net> wrote in message
news:10rigrjbd9ejb1@corp.supernews.com...
>i have an Archive Python 06408-xxxx DDS4 Tape drive that came installed in
>a
> Dell PowerEdge server and I'm using ArcServe 2000 Advanced for my backup
> software. My question is what is the largest amount of data (in gbs) that
> I
> will be able to backup to a DDS4 tape? Do DDS4 tapes all have a standard
> limit? Is it 20gb raw, and 40gb compressed? I can't seem to find
> anything
> definitive on the web so I thought i'd ask here.
>
> thanks for the assistance.
>
> TB
It's 20GB raw. From that 20GB you need to deduct about 5-10% for overhead
for the backup software itself and for internal tape defect handling. Don't
be surprised if you get 18 or 19GB raw capacity. The drive supports hardware
compression, with real data you may see 1.5:1 or so. The 2:1 assumption
that's always quoted is a marketing dream.
Rob
|