🚀 go-pugleaf

On Mon, 11 Apr 2005 01:02:20 -0700, Michael Vilain wrote:

> In article <d3d54p$ap1$1@yoda.apana.org.au>,
>  Kralizec Craig <cd@lios.apana.org.au> wrote:
> 
>> Hi everyone,
>> 
>> It's time for me to look at a new backup strategy and I'm considering a DLT
>> array managed with Amanda (from "http://www.amanda.org"), but some people
>> have suggested I shouldn't even bother with DLT and go straight to LTO
>> instead.
>> 
>> LTO arrays are a significant order or magnitude more expensive on average
>> than DLT arrays with 1 or more DLT-7000 drives in them, which is the main
>> reason I've been initially angling towards a good quality DLT array.
>> 
>> Anyway, what are the advantages and disadvantages of each type of backup
>> media? My backup requirements are not ultra-massive super-secret
>> government-type backup 'farms' in size, just a small array with enough
>> capability to reliabably provide data backup (and recovery) services for my
>> small network of around 10 or so active systems.
>> 
>> Regards,
>> 
>> Craig.
> 
> How much data each night are you backing up?

This is probably the key factor in my opinion.

> What is you "backup window" during which time backups are done and 
> applications must be down or setup to do backups (e.g. Oracle)?

Hopefully any key critical systems have a OS that supports snapshots,
and the backup window is effectively 24 hours :)

As regard to the original post, good look getting new DLT7000 drives.
They have not been in manufacture for several years now. Even DLT8000
drives stop production last year. You might also want to consider SDLT,
which gives better capacities and speeds per tape on a par with LTO.

On a side note does anyone have any experience of the SuperAIT drives
and tapes? Basically AIT in a 1/4" DTL/LTO sized cartridge. The specs look
good on paper; 500MB native capacity per tape, with 30MB/s native transfer
speed. However it is helical scan something I am not a great fan of.

JAB.

-- 
Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
Northumberland, United Kingdom.       Tel: +44 1661-832195