While you do need to use some type of tape copy utilities to move from a B20 to a TS7740; you also would have to use some type of dasd copy utility to move from one dasd subsystem to another UNLESS you stay within the same product line (they often have some upgrade utilities that make migration within the same vendor easier to handle). Granted, the dasd copy utilities now allow using flashcopy and other such techniques to improve performance - but that means you have a second copy of the file on the original device AS you are making a third copy on the new device (just how many copies do you want to make to move the data?).
You are also mistaken in item 3; a TS1140 can read TS1120 and TS1130 tapes; and TS1130 can read TS1120 tapes. The direction from IBM is to read/write in the new format AND the -1 format; and to read both the -1 and -2 formats. So there is a lot of backward migration. And then there is the subject of how long a dasd box will last and how long a tape system will remain in effect. Since you are currently using a B20, I wonder just how old that unit is? Russell Witt CA 1 L2 Support Manager -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Tommy Tsui Sent: Wednesday, March 28, 2012 6:59 AM To: IBM-MAIN@bama.ua.edu Subject: Re: Tapeless solution (IBM or Sun) Enterprise class What I concerns are: 1. Tape still have life time, if 1TB tape damage then we need more time to re-built or re-create it, except you implement dual copy or PPRC VTS and it cost you more. 2. Tape migration is my concern, I think disk to disk migration is more faster solution. I can't find any migration approach for B20 to TS7740 or TS7740 to another new model, except using COPYCAT or TAPECOPY utility, read all tapes to cache and copy back to other tape subsystem 3. IBM Tape drives cannot read each other, TS1120, TS1130, TS1140...If a new model comes and we need to preform another migration....copy again and again from tape to another tape system because of new drives.....TRUE ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
