Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
Avoid dataset migration

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM
View previous topic :: :: View next topic  
Author Message
rohin

New User


Joined: 29 Apr 2005
Posts: 21
Location: Gurgaon, India

PostPosted: Tue Aug 26, 2008 2:39 am    Post subject: Avoid dataset migration
Reply with quote

Hi,

Could anyone please tell how can I avoid my datasets going for migration? I want my datasets on DASD for a period of 1 month.

Thanks,
Rohin
Back to top
View user's profile Send private message

dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Tue Aug 26, 2008 2:50 am    Post subject:
Reply with quote

Hello,

Talk with your storage management people to see if they will set up the rules to retain your datasets for 1 month. Do not be surprised if they will not.

If you believe your datasets are more important than other people's, talk with your manager and if your manager agrees, the manager can make the request of the storage management people.

It is usually best to let the system run itself. If you haven't used the data, why not have it migrated? It is only a slight inconvenience.
Back to top
View user's profile Send private message
expat

Global Moderator


Joined: 14 Mar 2007
Posts: 8620
Location: Back in jolly old England

PostPosted: Tue Aug 26, 2008 11:39 am    Post subject: Re: Avoid dataset migration
Reply with quote

rohin wrote:
Hi,
Could anyone please tell how can I avoid my datasets going for migration? I want my datasets on DASD for a period of 1 month.
Thanks,
Rohin

Why ? As asked by Dick, if you don't use them.
Back to top
View user's profile Send private message
Anuj Dhawan

Senior Member


Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Thu Jan 29, 2009 12:19 pm    Post subject: Reply to: Avoid dataset migration
Reply with quote

Hi,

This is about storage guys for sure, however, at my shop every RACF ID is been given a right to use a nicely written CLIST - that clist was originally developed by storage management to allow developers to easily change the mgmtclas of a dataset. This clist will change the dataset passed in to mgmtclas=XXXXXX which means the dataset will be retained for up to 370 days since the last access date..check with some "seniors" at your shop if they are aware of such an "in-house CLIST" .
Back to top
View user's profile Send private message
dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Thu Jan 29, 2009 8:31 pm    Post subject:
Reply with quote

Hello,

Why should a dataset take up online dasd space and be unused for over a year?

Let's assume hundreds or thousands of datasets per person and let's assume a few hundred people who all are not willing to be inconvenienced for a few minutes of recall and simple arithmetic says i need to buy an incredible amount of new dasd to support this.

I suppose it would be good if i had the account to sell the place the dasd . . . icon_wink.gif
Back to top
View user's profile Send private message
MBabu

Active User


Joined: 03 Aug 2008
Posts: 401
Location: Mumbai

PostPosted: Fri Jan 30, 2009 1:08 am    Post subject: Reply to: Avoid dataset migration
Reply with quote

On the other hand, a data center with 10TB online was unusual only a few years ago, and now you can have that on your PC for about US$2000, so is dasd expense still an issue? I realize that enterprise dasd is probably more expensive but with SANs and server farms, it seems that DASD space should be a non-issue these days.
Back to top
View user's profile Send private message
expat

Global Moderator


Joined: 14 Mar 2007
Posts: 8620
Location: Back in jolly old England

PostPosted: Fri Jan 30, 2009 3:12 pm    Post subject:
Reply with quote

But why purchase / lease more than you need to ? If through effective storage management procedures the maximum effectiveness can be obtained, why spend money when you don't need to. After all, the less money spent the more there is available for your yearly bonus.

Anyway, a proper storage environment would prevent users from making overrides to management class selection. That's the way that I do it icon_lol.gif
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> JCL & VSAM All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
No new posts File Tailoring -- Temporary dataset i... samzee71 CLIST & REXX 3 Fri Dec 01, 2017 3:12 am
No new posts Copy 4 byte of data from the last rec... arunsoods DFSORT/ICETOOL 9 Fri Oct 06, 2017 12:15 pm
No new posts opening a dataset after reading it fr... arunsoods DFSORT/ICETOOL 5 Wed Oct 04, 2017 3:54 pm
No new posts Updating the Trailer count in variabl... satheshbabur DFSORT/ICETOOL 6 Wed Aug 30, 2017 9:49 pm
No new posts Mainframe dataset split purushottam DFSORT/ICETOOL 13 Tue Aug 29, 2017 12:28 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us