Re: Backup of 300 GB Data within 12 Hours

Hi,
it is certainly possible, and you do not need a SAN.

First you need a host that can handle the throughput. You need good disk 
storage and good network connectivity. I certainly don't backup as mush data as 
some people, but rate at which I do is pretty good. Ex:
08/22/02 03:22:47 ANE4952I (Session: 16207, Node: UNXR) Total number of objects 
inspected:  119,626
08/22/02 03:22:47 ANE4954I (Session: 16207, Node: UNXR) Total number of objects 
backed up:      592
08/22/02 03:22:47 ANE4958I (Session: 16207, Node: UNXR) Total number of objects 
updated:          0
08/22/02 03:22:47 ANE4960I (Session: 16207, Node: UNXR) Total number of objects 
rebound:          0
08/22/02 03:22:47 ANE4957I (Session: 16207, Node: UNXR) Total number of objects 
deleted:          0
08/22/02 03:22:47 ANE4970I (Session: 16207, Node: UNXR) Total number of objects 
expired:        518
08/22/02 03:22:47 ANE4959I (Session: 16207, Node: UNXR) Total number of objects 
failed:           0
08/22/02 03:22:47 ANE4961I (Session: 16207, Node: UNXR) Total number of bytes 
transferred:    57.41 GB
08/22/02 03:22:47 ANE4963I (Session: 16207, Node: UNXR) Data transfer time: 
3,381.59 sec
08/22/02 03:22:47 ANE4966I (Session: 16207, Node: UNXR) Network data transfer 
rate:        17,803.27 KB/sec
08/22/02 03:22:47 ANE4967I (Session: 16207, Node: UNXR) Aggregate data transfer 
rate:      26,589.87 KB/sec
08/22/02 03:22:47 ANE4968I (Session: 16207, Node: UNXR) Objects compressed by:  
                  0%
08/22/02 03:22:47 ANE4964I (Session: 16207, Node: UNXR) Elapsed processing 
time:            00:37:44

26, 589 KB/s is 91GB/hr. This is not over a network but from local storage to 
an LTO.

Example 2:
08/21/02 13:49:16 ANE4952I (Session: 15962, Node: UNXP) Total number of objects 
inspected:  117 144
08/21/02 13:49:16 ANE4954I (Session: 15962, Node: UNXP) Total number of objects 
backed up:    2 002
08/21/02 13:49:16 ANE4958I (Session: 15962, Node: UNXP) Total number of objects 
updated:          2
08/21/02 13:49:16 ANE4960I (Session: 15962, Node: UNXP) Total number of objects 
rebound:          0
08/21/02 13:49:16 ANE4957I (Session: 15962, Node: UNXP) Total number of objects 
deleted:          0
08/21/02 13:49:16 ANE4970I (Session: 15962, Node: UNXP) Total number of objects 
expired:        857
08/21/02 13:49:16 ANE4959I (Session: 15962, Node: UNXP) Total number of objects 
failed:           0
08/21/02 13:49:16 ANE4961I (Session: 15962, Node: UNXP) Total number of bytes 
transferred:    34.94 GB
08/21/02 13:49:16 ANE4963I (Session: 15962, Node: UNXP) Data transfer time: 1 
276.17 sec
08/21/02 13:49:16 ANE4966I (Session: 15962, Node: UNXP) Network data transfer 
rate:        28 714.35 KB/sec
08/21/02 13:49:16 ANE4967I (Session: 15962, Node: UNXP) Aggregate data transfer 
rate:      31 797.51 KB/sec
08/21/02 13:49:16 ANE4968I (Session: 15962, Node: UNXP) Objects compressed by:  
                  0%
08/21/02 13:49:16 ANE4964I (Session: 15962, Node: UNXP) Elapsed processing 
time:            00:19:12

This is over an SP Switch direct to tape. Granted my file size is generally 
large - it is a Sybase database, but it is the configuration of the TSM 
environment that will decide how fast things will go.

Again, this is certainly possible as long as your company can afford the money 
to buy good hardware and the time to manage, analyze and make changes.
Miles


----------------------------------------------------------------------------------------------
Miles Purdy 
System Manager
Agriculture and Agri-Food Canada,
Information Systems Team,
Farm Income Programs Directorate
Winnipeg, MB, CA
purdym AT fipd.gc DOT ca
ph: (204) 984-1602 fax: (204) 983-7557

"If you hold a UNIX shell up to your ear, can you hear the C?"
-------------------------------------------------------------------------------------------------

>>> Sascha.Braeuning AT SPARKASSEN-INFORMATIK DOT DE 22-Aug-02 1:36:21 AM >>>
Hi,

what is your opinion about backing up or restoring 300GB data with TSM
within 12 hours from one client? Possible or not? Do I have to use a SAN
that I get acceptable transfer rates? If there is anybody out there who
backs up such a big amount of data:

How is your "TSM"-area constructed? (e.g. Server-type, LAN, SAN ...)

MfG
Sascha Bräuning


Sparkassen Informatik, Fellbach

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