Is it old school thinking. Isn't as close to 32670 as you can the optimal? If you use BLKSIZE=0 in your JCL you should be achieving that.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Lizette Koehler Sent: Thursday, March 26, 2009 12:22 To: [email protected] Subject: Optimal Tape Blocksize I am going to be doing an analysis on our tapes to see if they are optimally blocked. We are using VTS that looks like 3490E tapes. Is there a good rule of thumb for all datasets on tape - that to be blocked optimally use X? The lrecls on these tape range from 80 to 10399 Lizette ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
