We are using the 8100 because it is here.

The 8100 is shared across the mainframe.  z/os for all administrative data, 
db2, vsam etc.  All z/os backups ar done to tape as well. However, the 
university is getting an ERP solution, and the remaining candidates are 
sunguard banner, and peoplesoft.  Finally, there is a distinct anti-mainframe 
wind blowing here.  I give it five years tops.

 


Gary Lee
Senior System Programmer
Ball State University
phone: 765-285-1310

 
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Remco Post
Sent: Monday, June 14, 2010 12:12 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Questions about vtl useage

Hi,

On 14 jun 2010, at 14:54, Lee, Gary D. wrote:

> Tsm server v5.5.4 running on suse sles9 under zvm 5.3.
> 
> We are in need of expanding our storage.  Currently have an ibm 8100.  The 
> disk is cheap enough, but the licensing for additional storage is outrageous.
> 

I'd say that a ds8100 is way overkill for TSM usage. DS5000 is way more 
suitable, and a lot less expensive.

> We are thinking of switching to using a vtl for onsite storage and doing away 
> with our onsite tape.
> 

Tape has one advantage: idle tapes are almost cost-free. Idle data sitting on 
disk still consumes power. Of course, if the amount of data is small enough 
(few TB) a disk-only solution makes sense. And of course, if your DR 
requirements are that you need access to first byte to be less than a second....

> Are any folks out there using vtl, and if so what kinds and what has been 
> your experience?
> 
> I currently have about 3 tB of onsite tape, looking to at least double that 
> when we pick up the exchange 2007 environment.
> 

3 TB is peanuts. I'd say, buy a DS3000 (or comparable) dedicated to TSM. Will 
be way cheaper than any VTL solution. BTW, where do you keep the backups of all 
other data on your ds8100?


> Thanks for any information.
> 
> 
> Gary Lee
> Senior System Programmer
> Ball State University
> phone: 765-285-1310
> 

-- 
Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622