Have you thought about defining different sized virtual tapes and possibly using a larger tape for ML2?
Of course as some else pointed out, large tapes would mean having to stage more data back into the VTS buffer for any recall from a tape not already in the buffer. Must be some way to figure out what the optimum size would be. ddk Wayne Bileci <[email protected]> Sent by: IBM Mainframe Discussion List <[email protected]> 07/08/2009 05:59 PM Please respond to IBM Mainframe Discussion List <[email protected]> To [email protected] cc Subject DFHSM Native 3590 tapes to virtual 3490E's We will be migrating DFHSM 3590 native tapes from a 3494ATL/B18 Vts environment to a new IBM TS7700. The 3590's will be recycled via HSM onto virtual 3490E media type 2 volumes(4000MB) in the new VTS. My question is - Is this feasible to take 3590(10GB uncomressed tapes) compressed data tapes and move the data onto the smaller 3490E's? If my calculations are correct we will need 4 or 5 virtual volumes for each physical 3590 which means our TMC volume count will rise dramatically but I am more concerned about the impact to HSM and the CDS's because we will probably have more connected volume groups. Thanks, Wayne Bileci ---------------------------------------------------------------------- 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 ************************************************************************************** This e-mail message and all attachments transmitted with it may contain legally privileged and/or confidential information intended solely for the use of the addressee(s). If the reader of this message is not the intended recipient, you are hereby notified that any reading, dissemination, distribution, copying, forwarding or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately and delete this message and all copies and backups thereof. Thank you. ************************************************************************************** ---------------------------------------------------------------------- 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
