Need clarity in migration of VSAM dataset

ananth86 · New User Joined: 10 Jun 2009 Posts: 59 Location: Hyderabad

Hi

I need to know what are the limitations in migrating the VSAM datasets?
Can all VSAM datasets be migrated?

Robert Sample · Posted: Tue Feb 09, 2010 3:54 pm

Assuming you're talking about DFSMShsm migration, then yes VSAM data sets can migrate. Since you didn't specify what you meant by "migrated" we could equally validly assume you want to know if they fly south for the winter.

What information do you want to know about the limitations? That is usually what the manuals are for -- reading and finding out yourself about the capabilities and limitations of the software. You would also need to contact your site storage management group since they define the rules about data sets (which are different for every site).

ananth86 · New User Joined: 10 Jun 2009 Posts: 59 Location: Hyderabad

Yes, i am talking about HSM migration only. My mentor told me never try to migrate the VSAM datasets. But when i was browsing thro the system, I found some migrated VSAM datasets.

Now I m confused, any pointers where I can find about this?

expat · Posted: Tue Feb 09, 2010 5:21 pm

Maybe you should ask your mentor the reason behind his instructions.

Migrating a VSAM cluster is absolutely no different to migrating any other type of dataset. It goes either to tape or DASD and frees up space within the primary DASD pool.

Robert Sample · Posted: Tue Feb 09, 2010 5:58 pm

Your mentor either knows little about HSM, or there is some specific reason at your site why this statement was made. In either case, as expat stated, you need to explore the reasons with your mentor since VSAM migration (and recall) is a normal part of HSM.

dick scherrer · Posted: Tue Feb 09, 2010 10:39 pm

Hello,