- Backupsets do not have the ability to have copies in TSM. Count
yourself how many times a tape (of the backupset) can become bad during
those 7 years.If you realize it on the 4-th or 6-th year ...?
- Will you stay at current tape drive technology forever? What
should you do after 7 years - today's backupsets are let say on DLT,
during 2003-2004 you will use LTOv2 and later will be say on LTOv4?!? You
will have to keep *operative* and working for restores all technologies
used during last 7 years.
- What do you mean as "huge"? Alex already did some math. The only
thing he did not added is: there are many people successfully driving 80,
100, even 180 GB TSM DB (with appropriate hardware of course). And it
works every day!
- Backupset lives alone on a cartridge and nothing else can use it.
If your backupset is for example 30 GB and you still use DLT 7000 wasted
space will be "only" 14%. If DLT8000 is used it will grow to 25%, for 100
GB LTO and 110 GB SDLT - 70% and 73% respectively. This will mean unused
*expensive* cartridges. For 7 years, 2 cartridges (minimum) per day, ...
do the math yourself.
(TSM rulez! sorry, cannot resist to ask bean counters how it will cost
using *any* other product :-)
I can only add that if *each* copy is so important to force you to make
them twice a day, you have to be careful.
Zlatko Krastev
IT Consultant
Alex Paschal <AlexPaschal AT FREIGHTLINER DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
02.12.2002 18:18
Please respond to "ADSM: Dist Stor Manager"
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: Re: Permanent retention
Dorothy,
2 archives/day * 365.25 * 7 * 800b (600b+200b for copy) = about 4.1
MB/object at the end of 7 years. How many objects will you archive each
day? When you're fully populated at 7 years, your database would have
grown
by only 1GB due to these archives if you're archiving as many as 240
objects
twice a day. I'd say your archives, unless you're doing thousands of
objects twice a day, probably shouldn't grow your database as much as you
might fear.
Alex Paschal
Storage Administrator
Freightliner, LLC
(503) 745-6850 phone/vmail
-----Original Message-----
From: Dorothy LIM Kay Choo [mailto:Dorothy.LimKC AT UOBGROUP DOT COM]
Sent: Monday, December 02, 2002 1:43 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Permanent retention
Hi Zlatko,
Thks for the suggestion. I understand that the archive function will
result
in huge database. I believe there is a protential problem if the database
grows too big.
Because of the above, I tried to used backupset which was recommended to
be
as a better option.
Regards,
Dorothy Lim
Systems & Network Division, United Overseas Bank Limited
mailing address: 396 Alexandra Road, #04-00, BP Tower Singapore
119954
e-mail: Dorothy.LimKC AT UOBgroup DOT com // tel: 371 5813 // fax:
270
3944
Privileged/Confidential information may be contained in this
communication (which includes any attachment(s)). If you are not an
intended recipient, you must not use, copy, disclose, distribute or retain
this communication or any part of it. Instead, please delete all copies
of
this communication from your computer system and notify the sender
immediately by reply email. Thank you.
-----Original Message-----
From: Zlatko Krastev/ACIT [mailto:acit AT ATTGLOBAL DOT NET]
Sent: Monday, December 02, 2002 4:01 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Permanent retention
Look at the "Archive" function of TSM client. It can be invoked from CLI
by using "dsmc archive <objects> <options>" or from GUI/Web pressing
button "Archive" instead of "Backup".
With appropriate settings in archive copygroup (which is different from
backup copygroup) this is very easy to achieve. Look for "def copy t=a"
server command.
Zlatko Krastev
IT Consultant
Dorothy LIM Kay Choo <Dorothy.LimKC AT UOBGROUP DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
02.12.2002 08:47
Please respond to "ADSM: Dist Stor Manager"
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: Permanent retention
Hi,
I would like to seek advise on how to use TSM to keep my information
permanent.
Before the application, execute the end-of-day processing, a set of
database
will be dump.
After the end-of-day processing, there is another dump to database which
will overwrite the previous.
I need to keep both set for a retention of 7 years.
Any advise ?
Regards,
Dorothy Lim
Systems & Network Division, United Overseas Bank Limited
mailing address: 396 Alexandra Road, #04-00, BP Tower Singapore
119954
e-mail: Dorothy.LimKC AT UOBgroup DOT com // tel: 371 5813 // fax:
270
3944
Privileged/Confidential information may be contained in this
communication (which includes any attachment(s)). If you are not an
intended recipient, you must not use, copy, disclose, distribute or retain
this communication or any part of it. Instead, please delete all copies
of
this communication from your computer system and notify the sender
immediately by reply email. Thank you.
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