Darth, We're looking at doing the exact same thing as Esmie. As to your asking why, here is our reasoning. All we have left on the 3590s is DFHSM processing. We have moved our system backups to TS1120 media, but don't want to use the same library for DFHSM as our backups. If we can move the HSM ML2 to disk, we can eliminate the hard costs of maintaining the 3590s, reclaim the floor space, eliminate the operator intervention for doing recalls, tape recycles, and all that fun stuff. As far as why we're looking at leaving ML1/ML2, we have just migrated all our production data (including ML1) from one disk array to another. My plan is to take the older array (still quite servicable and usable DS6800), reconfigure it as all MOD 54 devices, and move my ML2 to this array. I can then back these MOD 54 devices up to tape for offsite, and the ML2 is on a different array from my production and ML1 devices. My ML1 is a lot more dynamic than my ML2, so I can't see using the MOD 54 devices for ML1 due to the VTOC size. (I don't have PAV).
Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Darth Keller Sent: Monday, April 19, 2010 12:08 PM To: IBM-MAIN@bama.ua.edu Subject: Re: DFHSM QUESTION - MOVING TO DASD FROM TAPE - ML2 >>Because of incessant problems with tapes (3590-1) we are looking at using DASD for ML2 migration as well as BACKUP. Besides changing the following >>commands is there something else I could have overlooked? >>If anybody has been down this road I would appreciate it if you could warn me of any potential problems that you have encountered. If I understand this correctly, you're going to have 2 levels of migration both on Disk? Even if that's possible, what does it gain you? Wouldn't it make more sense to just have an ML1 and then no ML2? And again, I question whether that's even possible with HSM. I do seem to remember this same discussion in the past, so you should probably check out the archives. We're actually going the other route - we're moving to a 'tapeless' virtual tape system & I'm eliminating ML1. ddk 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 lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
