Tape Data Set Names
On Titan, tape data set names are more important than they were on
the South system.
- The tape management system is based on data sets rather than
- All tape data sets follow the same data set naming convention
as disk data and must begin with a valid USERid or account
Group. Only foreign tapes are exempt from this requirement.
- South tape data sets that do not begin with a valid USERid or
account group must be renamed when they move to Titan.
- RACF data set profiles cover tape data sets as well as disk
data sets. On the South system, RACF data set profiles apply
only to disk data sets.
- Access to tape data on Titan is based on access to the first
data set on the tape.
- For tapes that contain more than one data set, if you do not
have the proper RACF authority to access the first data set on the
tape, you do NOT have access to any data set on the tape.
- If you DO have RACF authority to the first data set, you also
have access to all other data sets on the tape.
- For this reason, you should ensure that all data sets on a
tape have identical access requirements.
- Charging for tapes on Titan is based on the USERid of the
first data set on the tape. You are charged for each tape
volume you own, and the "ownership" of the volume is established by
the data set name of the first data set on the tape.
- If your tape has valid data set names (beginning with an
account/initials combination) it can be moved to Titan and the data
set names will NOT have to change.
- HOWEVER, if the USERid of the first data set name does not
belong to you, you may not have access to this tape on Titan.
- On Titan this tape will "belong" and be charged to the USERid
that begins the first data set name on the tape.
- For these reasons, if your tape data sets begin with USERids
different from your USERid, you may want to rename them when you
move to Titan.