Re: VTL's (looking for info)

2007-02-07 Thread Paul Zarnowski
I have been pondering this for some time. There are pros and cons either way (vtl vs SAD (serial-access disk). VTL Pros: - Works with LAN-free backups. SAD does not. - Most of the newer VTLs either have data reduction technology, or have it on their roadmap. By "data reduction" I refer to dedu

Re: Re: VTL's (looking for info)

2007-02-06 Thread David Bronder
Steven Harris wrote: > > Perhaps a little harsh Roger? Don't some VTLs implement tape hardware > functionality that TSM can find difficult, I'm thinking of hardware > compression in particular, but maybe encryption would be another. Seems like LAN-free/server-free would be a lot easier with VTLs,

Re: VTL's (looking for info)

2007-02-06 Thread Steven Harris
Perhaps a little harsh Roger? Don't some VTLs implement tape hardware functionality that TSM can find difficult, I'm thinking of hardware compression in particular, but maybe encryption would be another. Regards Steve Steven Harris AIX and TSM Admin Brisbane, Australia Roger Deschner wrote:

Re: VTL's (looking for info)

2007-02-06 Thread Roger Deschner
In general, discouraged. What you want instead is big, native-mode RAID arrays, configured as disks using devtype=file, not as virtual tapes. You get a lot more flexibility and a lot less complexity, compared to a VTL. TSM even does the backup-to-tape function better. (copy pools) The VTL software

Re: VTL's (looking for info)

2007-02-06 Thread Richard Sims
On Feb 5, 2007, at 9:14 PM, Gill, Geoffrey L. wrote: Does anyone have a doc or a link to anything that discusses the pro's and con's of a VTL? VTLs and their merits have been heavily discussed in the past. Search for "VTL" at http://www.mail-archive.com/adsm-l@vm.marist.edu/ .

Re: VTL's (looking for info)

2007-02-06 Thread IG Coolen
onden: dinsdag 6 februari 2007 11:19 Aan: ADSM-L@VM.MARIST.EDU Onderwerp: Re: VTL's (looking for info) Geoff The last time I posted an enquiry regarding VTL's, I received some info from some people at Sepaton. I think that they subscribe to the list for this purpose. It wasn't a hard sell o

Re: VTL's (looking for info)

2007-02-06 Thread Leigh Reed
Geoff The last time I posted an enquiry regarding VTL's, I received some info from some people at Sepaton. I think that they subscribe to the list for this purpose. It wasn't a hard sell or anything like that, they just asked if they could send me some literature and I accepted. The literature was