Re: Software only VTS?

2007-07-04 Thread Ron Hawkins
And let's not forget TMM that comes free with z/OS and your friendly
neighbourhood Storage Administrator...

Ron
 
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Russell Witt
Sent: Tuesday, July 03, 2007 2:49 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: [IBM-MAIN] Software only VTS?

As Timothy stated, there are may options. Some (CA-1/Copycat,
TLMS/Copycat,
Tivoli Tape Optimizer, TAPESAVER, FATSCOPY) will copy tapes files AFTER
they
have been created and stack them together. CA-Vtape is a true
virtual-tape
emulation that uses existing dasd as the cache and then stacks the
copies
on the backend high-capacity cartridges. So a lot really depends on what
you
are trying to eliminate. Any of these would allow you to consolidate and
fully utilize the new higher-capacity drives. If you are also trying to
eliminate the number of physical drives you use; then a true
virtual-tape
emulation will be needed. That would either by an IBM VTS, Sun/STK VSM,
CA-Vtape, the EMC Copycross or a few others. Most require some specific
hardward purchase, but EMC will work if you already have an EMC dasd
device
and CA-Vtape will work with any dasd devices.

Russell Witt
CA-1 Level-2 Support Manager

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Re: Software only VTS?

2007-07-04 Thread R.S.

Greg Grimm wrote:
We are going to replace our tape hardware (Tape Library (ATL), VTS). In 
investigating how our other operating systems use tapes I found that they 
use IBM TSM to talk directly to the ATL - and get high tape utilization (i.e. 
stacking multiple files on tape). kind of like a software VTS. Is there a product 
that supports this function on z/OS?


Apples and oranges. Similar, but different. TSM is an *application* using 
*real* tapes in efficient way.
The closest comparison to TSM is DFSMSHSM or FDR/ABR. However that means you should write directly to your tape, no DD names pointing to tape datasets. While it's quite good idea, it could require changes in your processing. 
On the other hand, VTS, VSM and some other solutions do similar thing on hardware side, thus (almost) no changes are required on software side. 


There are also some products which 'fill the gap' - those product TRY to 
optimize media utilization with minimal changes to current job processing. IMHO 
it is better to change current processing than spend money on products which 
partially solve the problem. However the devil is in the details, YMMV, etc.

--
Radoslaw Skorupka
Lodz, Poland


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Re: Software only VTS?

2007-07-04 Thread John Ticic
 snip ---
And let's not forget TMM that comes free with z/OS and your friendly
neighbourhood Storage Administrator...

Ron

--- snip --

That's almost true Ron. Some product has to move the data to tape. You
still have to pay for HSM.
Other than that, I agree with you.

John

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Re: Software only VTS?

2007-07-04 Thread Ron Hawkins
John,

If a licence to enable DFSMShsm, ABR, or install similar software is
required then I would have to agree with you.

I've only ever seen one Production LPAR that was not running a migration
product... but they were for it anyway.


Ron

--- snip --

That's almost true Ron. Some product has to move the data to tape. You
still have to pay for HSM.
Other than that, I agree with you.

John

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Software only VTS?

2007-07-03 Thread Greg Grimm
We are going to replace our tape hardware (Tape Library (ATL), VTS). In 
investigating how our other operating systems use tapes I found that they 
use IBM TSM to talk directly to the ATL - and get high tape utilization (i.e. 
stacking multiple files on tape). kind of like a software VTS. Is there a 
product 
that supports this function on z/OS?

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Re: Software only VTS?

2007-07-03 Thread Timothy Sipples
Greg Grimm writes:
We are going to replace our tape hardware (Tape Library (ATL), VTS). In
investigating how our other operating systems use tapes I found that
they
use IBM TSM to talk directly to the ATL - and get high tape utilization
(i.e.
stacking multiple files on tape). kind of like a software VTS. Is there a
product
that supports this function on z/OS?

If the goal is to get higher tape utilization, there are many ways to do
that.  Tape stacking is one good way, and there are many such products.
One example is IBM Tivoli Tape Optimizer for z/OS:

http://www-306.ibm.com/software/tivoli/products/tape-optimizer-zos/

And there are many other products in this general category.  Here are some
that might be applicable:

CA - BrightStor CA-Vtape
CA - BrightStor CA-1 CopyCat
UNICOM - CARTS/TS
OpenTech - Tape/Copy
Innovation Data Processing - FATSCOPY
BetaSystems - Beta 55 Storage Optimization Manager
SEA - ZELA Tape Stacking
Cartagena Software - TelTape/390

There have been a lot of discussions in the IBM-MAIN archives about
hardware VTSes and when they have value.  That's probably worth some study.
It could very well be that hardware VTS is the way to go.  Also, I couldn't
quite tell if you know about Tivoli Storage Manager for z/OS.  Sounds like
it, but just mentioning it.

- - - - -
Timothy Sipples
IBM Consulting Enterprise Software Architect
Specializing in Software Architectures Related to System z
Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific
E-Mail: [EMAIL PROTECTED]
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Re: Software only VTS?

2007-07-03 Thread Tom Marchant
On Tue, 3 Jul 2007 12:43:29 -0500, Greg Grimm wrote:

We are going to replace our tape hardware (Tape Library (ATL), VTS). In
investigating how our other operating systems use tapes I found that they
use IBM TSM to talk directly to the ATL - and get high tape utilization (i.e.
stacking multiple files on tape). kind of like a software VTS. Is there a 
product
that supports this function on z/OS?

TSM is primarily a backup/archive utility.  Under z/OS those functions are 
handled primarily by products like HSM or FDR/ABR.  I'm not sure about HSM, 
but ABR does an excellent job of filling up tapes.

-- 
Tom Marchant

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Re: Software only VTS?

2007-07-03 Thread Russell Witt
As Timothy stated, there are may options. Some (CA-1/Copycat, TLMS/Copycat,
Tivoli Tape Optimizer, TAPESAVER, FATSCOPY) will copy tapes files AFTER they
have been created and stack them together. CA-Vtape is a true virtual-tape
emulation that uses existing dasd as the cache and then stacks the copies
on the backend high-capacity cartridges. So a lot really depends on what you
are trying to eliminate. Any of these would allow you to consolidate and
fully utilize the new higher-capacity drives. If you are also trying to
eliminate the number of physical drives you use; then a true virtual-tape
emulation will be needed. That would either by an IBM VTS, Sun/STK VSM,
CA-Vtape, the EMC Copycross or a few others. Most require some specific
hardward purchase, but EMC will work if you already have an EMC dasd device
and CA-Vtape will work with any dasd devices.

Russell Witt
CA-1 Level-2 Support Manager

-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED]
Behalf Of Greg Grimm
Sent: Tuesday, July 03, 2007 12:43 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Software only VTS?


We are going to replace our tape hardware (Tape Library (ATL), VTS). In
investigating how our other operating systems use tapes I found that they
use IBM TSM to talk directly to the ATL - and get high tape utilization
(i.e.
stacking multiple files on tape). kind of like a software VTS. Is there a
product
that supports this function on z/OS?

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Re: Software only VTS?

2007-07-03 Thread Itschak Mugzach
Afaik Control-T has the ability to stack files  on tapes in order to
optimize/utilize  tape space. You probably do not want to mount tape all day
to copy files from one tape to another and do only one write on the proper
tape. You should use a tape library product like CTT, but I am sure this is
not the only one in market that does that. 
Other option is to use cheap (read SATA) disk arrays with an emulation
control unit that mimics 3390. There are some players in this market like
Bustech. 


Itschak 

-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of Russell Witt
Sent: Tuesday, July 03, 2007 11:49 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: Software only VTS?

As Timothy stated, there are may options. Some (CA-1/Copycat, TLMS/Copycat,
Tivoli Tape Optimizer, TAPESAVER, FATSCOPY) will copy tapes files AFTER they
have been created and stack them together. CA-Vtape is a true virtual-tape
emulation that uses existing dasd as the cache and then stacks the copies
on the backend high-capacity cartridges. So a lot really depends on what you
are trying to eliminate. Any of these would allow you to consolidate and
fully utilize the new higher-capacity drives. If you are also trying to
eliminate the number of physical drives you use; then a true virtual-tape
emulation will be needed. That would either by an IBM VTS, Sun/STK VSM,
CA-Vtape, the EMC Copycross or a few others. Most require some specific
hardward purchase, but EMC will work if you already have an EMC dasd device
and CA-Vtape will work with any dasd devices.

Russell Witt
CA-1 Level-2 Support Manager

-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] Behalf
Of Greg Grimm
Sent: Tuesday, July 03, 2007 12:43 PM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Software only VTS?


We are going to replace our tape hardware (Tape Library (ATL), VTS). In
investigating how our other operating systems use tapes I found that they
use IBM TSM to talk directly to the ATL - and get high tape utilization
(i.e.
stacking multiple files on tape). kind of like a software VTS. Is there a
product that supports this function on z/OS?

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