Hi Roland,

The 9310 PowderHorn LSM can support a multitude of tape allocations, 
including native MVS via base HSC, virtual tape via VSM and Open Systems 
via CSC/NCS/ACSLS and so has a good inbuilt repository of information as 
these functions generate their own SMF records and monitoring events (E.g. 
WTO), which can be reported on using any tool such as DFSORT/ICETOOL, 
MXG/SAS, Rexx, et al.  I know that those sites not wishing to pay for a 
software product use the MXG mapping macros for after-the-event report 
production or the mapping macros provided by StorageTek as a base.

Software products that I know of are listed as:

ExLM (Expert Library Manager) @ 
http://www.storagetek.com/products/product_page63.html
ExLM software provides content management for mainframe automated tape 
environments. It works with StorageTek Host Software Component software, 
StorageTek Virtual Storage Manager system and other tape management 
software to fully manage tape operations.

ExPR (Expert Performance Reporter) @ 
http://www.storagetek.com/products/product_page64.html
ExPR software allows storage administrators to track tape subsystem 
activity. Tracking enables planning for capacity and resource allocation 
strategies. Information is accessed in real time. Two years of historical 
data can be displayed.

There used to be a product called Beta 54 
(http://www.clay.com/beta/beta54nowavailable.html) that was quite nifty, 
but it doesn’t seem to be listed now.  Back in 2000 ASG and Beta Systems 
did some deal with regard to some of the Beta Systems products, and maybe 
Beta 54 got dropped around then.  I think at one time there was talk of 
StorageTek integrating Beta 54 into ExPR, but I’m not sure if this 
happened.

Bottom Line: Sometimes products can just complicate matters if you really 
don’t take the time to understand what your solution is and how it should 
be performing.  For somebody who understands HSC and VSM, then analyzing 
the SMF records and the subsystem control data sets tells you all you need 
to know about 9310 capacity and performance, and arguably this is the way 
to go.  ExPR and ExLM will automate Performance Reporting and Library 
Management, but rely on the premise that you know what you’re doing, and 
so a little information might be a dangerous thing.  The simple rules of 
thumb for Capacity and Performance management should be applied, as per 
tape subsystem operations, for example:

* Mounts (Private, Scratch, Logical, Physical – Mapped to drive/robotic 
performance)
* Mount Time (Robotic Search + Robotic Load + Label Find)
* Spare Slots (LSM capacity – Slots Used)
* Scratch Count (LSM slots used – LSM private slots or LSM scratch slots)
* Cleaning Cartridges (Number, Times Used)
* Virtual Storage Cache Use (High Watermark, Low Watermark, Migration 
Efficiency)
* Virtual Storage Resource Used (Disk Space, MVC Counts, Logical Volumes, 
Etc.)

This list is by no means exhaustive, but knowing what resources to measure 
and how to measure them is of fundamental importance.  As due diligence, 
reporting on these metrics should be performed, so if you deploy a 
software product such as ExPR, then you can have confidence in the 
accuracy of the reports being produced.  If a job’s worth doing it’s worth 
doing well and so just buying a software product might not solve the 
problem…

Best Regards, UK Mikey.

On Sat, 22 Apr 2006 10:48:59 -0400, Roland Chung <[EMAIL PROTECTED]> 
wrote:

>Hi Listers, my client is looking for a software package for monitorring
>the STK tape libraries. They are at z/OS 1.5.
>
>Any suggestion will be appreciated.
>
>Thanks in advance.
>
>--
>With best regards,
>
>...Roland Chung

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