For those that are interested:

When Legato back's up to the advanced file type device it doesnt use the
"old" way of backing up to disk - i.e. Legato's open tape format. It uses
uasm - which goes a fair way of "compressing" (now this is where some may
disagree) - files to disk. You can as well do simultaneous backups and
restores and a combination of backups and clones. (as soon as a saveset is
done it is eligible).

As most people know the disk sub systems available nowadays are relatively
large (im talking at least 2 - 3 TB and up). If you dont have one yet ... im
sure I can sell you one <grin>....

Robert, typically most people will backup to disk and keep their data online
(i.e. nearline) for a few days etc - depending on your backup size and your
typical restore requirements.

One would then do a stage operation to get all of your data from your disk
to tape (doesnt necessarily need to happen in your backup window - which
makes it very attractive for some).

We have some clients that are looing at keeping the data for a week on disk
(i.e. a full cycle of dailies and a weekly) and then having the tape for DR
and corporate governance purposes etc etc.

Regards,

Riaan


-----Original Message-----
From: Robert Maiello [mailto:robert.maiello AT MEDEC DOT COM]
Sent: Tuesday, September 16, 2003 4:08 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: [Networker] Advanced File Device Size


Shawn,

For us non file device folks..

I imagine since it is not a tape drive that the volume is 500GB with no
compression taking place?

I have some clients that are 500GB+ in size.. I rely on the tape drive
compression quite a bit..I can't being to think the amount of file devices
I would need to do my backups.  I would need to stage the fulls to tape
almost immediately after they are backed up ??

Robert Maiello
Thomson Healthcare


On Tue, 16 Sep 2003 08:49:41 -0500, Shawn Cox <shawn.cox AT PCCA DOT COM> wrote:

>I'm Windows based, so may not apply. I have 2 500GB devices and one 200GB
>device.  Works nicely.
>--Shawn
>
>----- Original Message -----
>From: "Joel Fisher" <jfisher AT WFUBMC DOT EDU>
>To: <NETWORKER AT LISTMAIL.TEMPLE DOT EDU>
>Sent: Tuesday, September 16, 2003 8:43 AM
>Subject: [Networker] Advanced File Device Size
>
>
>Hey All,
>
>
>
>Anyone using AFDs as their main targets for backups?  How large did you
>create your devices.  It seems to me that the design of the AFD is
>geared towards very large devices.  Anyone using a vxvm managed volume
>cooked with vxfs as an AFD?  What size volumes did you go with?
>
>
>
>TIA,
>
>
>
>Joel
>
>
>--
>Note: To sign off this list, send a "signoff networker" command via email
>to listserv AT listmail.temple DOT edu or visit the list's Web site at
>http://listmail.temple.edu/archives/networker.html where you can
>also view and post messages to the list.
>=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
>
>--
>Note: To sign off this list, send a "signoff networker" command via email
>to listserv AT listmail.temple DOT edu or visit the list's Web site at
>http://listmail.temple.edu/archives/networker.html where you can
>also view and post messages to the list.
>=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=

--
Note: To sign off this list, send a "signoff networker" command via email
to listserv AT listmail.temple DOT edu or visit the list's Web site at
http://listmail.temple.edu/archives/networker.html where you can
also view and post messages to the list.
=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=