ADSM-L

Re: AW: Small Sites

2004-05-19 06:27:54
Subject: Re: AW: Small Sites
From: Douglas Currell <dlcurrell AT YAHOO DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 19 May 2004 06:27:42 -0400
Juraj,

I should state that my organization currently has a couple 100-user sites using 
local Windows TSM Servers with 2-drive tape libraries and they are administered 
remotely. Physical visits to the sites are no more than twice per year.

Full backup of the Domino server, is required, by Service Level Agreement. If 
Domino is local then there might as well be a local backup. As far as other TSM 
clients go, it's incrementals forever.

I



My suspicion is that a small site will consist of:


   portable, dockable XP laptops that will be backed up by schedule, using a 
client option set.
   Windows server
   Domino Server.


Salak Juraj <j.salak AT ASAMER DOT AT> wrote:
Hi,

as far as I understand you,
you only want to backup this site into an existing large TSM server
elsewhere.
I not, GOTO (2)

A small TSM Server per site, if necessarey at all,
is not practicable without both local administration and tape library.

I have few site like this (with the exception of Domino)
and the answer is :
first: it works, assuming that amount of files changed daily
is significantly less than WAN capacity in the backup window.
Second, read "first" again.
Third, compression and subfile backup can help much, but it depends
on data and you configuration.

Probaly backup of system object will not be practicable,
but backup of data files probably yes.

You will have to tune include/exclude options down,
you will have to tune network parameters,
compression/compressalways parameters (per directory, file type..)
subfilebackup
you will want to use journal service.

FORGET full backup weekly, no one needs it. Read TSM concepts,
browse in this user forum.
What you/your users need is RESTORE and ONLY RESTORE,
no one in the world ever needed backup, not to say a full backup.

Consider you restore requirements,
if full restore is an issue, it will take long time through the WAN.
Maybe is backup set generation and physical transfer of the backup set along
with
technician and restore on-site required and/or practicable.

For backup of Domine, think about replication. This might cause less
bandwidth consumption
comparing to TSM backup.

(2) if you want an backup server (tsm or not) in each of this sites,
you have apparently got a problem with both budget and administration,
in fact.

this are only couple of points from more to be considered

regards
Juraj


-----Urspr|ngliche Nachricht-----
Von: Douglas Currell [mailto:dlcurrell AT YAHOO DOT COM]
Gesendet: Mittwoch, 19. Mai 2004 09:19
An: ADSM-L AT VM.MARIST DOT EDU
Betreff: Small Sites


Has anyone deployed TSM in a very small site? When I say a small site I mean
something like this:


4 or 5 workstations & 2 or 3 servers
very limited bandwidth available from WAN - assume 56k (yes)
NO local administration
NO budget for tape library
TSM sharing a physical server with Domino, platform is Windows
150 MB per user per week storage growth
1 X 73 GB hd for use as storage pool/file device
100Mb LAN
access to large remote TSM servers
12 hour backup window, assumption that WAN link is at 56k (yes!)
backup of local workstations preferred but not required
TSM clients would mostly be Windows XP/2003 but could include Linux, in
particular, and just about anything else.
weekly full backup required to remote TSM server


Would this be a candidate for remote NAS backup? I am looking at TSM because
it allows for policy implentation, can accommodate clients on just about all
platforms and also because it allows backup to disk. This is not to say that
other backup/restore products could be used - Retrospect might be usable
too..

To me, this is an interesting exercise. Please share your thoughts..Thank
you





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