Hervey What is driving the need to move from TAPE to DASD? Which is less cost - Tape or Dasd? Going to dasd will require lots of dasd over time. With tape you can stick it on a shelf. On DASD you can only buy more Which has the High Availability that you need? How stable is your DASD vs. TAPE
If you lose you "disk" file of a tape then you lose everything. If a tape cartridge goes bad, it may be possible to recover it any way. We went pure tapeless in my shop. Recalls and migrations are faster (much faster). But I am needing to add more storage perhaps faster than I did when I just had to purchase tapes. There is less wasted space on virtual tape. I have 300GB tape files defined. But if a file is only 100KB then that is all that is used. I no longer waste a whole 300GB tape. Hope this helps. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Hervey Martinez > Sent: Tuesday, November 18, 2014 8:13 AM > To: [email protected] > Subject: Re: HSM ML2 on disk > > Yes, right now we do have a VTS that emulates a 3590 tape but we are looking > at > using ECKD to house the traditional ML2 files that historically have been on > tape. > > Regards, > > Hervey > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of George Rodriguez > Sent: Tuesday, November 18, 2014 9:39 AM > To: [email protected] > Subject: Re: HSM ML2 on disk > > Hi Hervey, > > I sort of did that, except that my ML2 was moved to my VTL (Virtual Tape > Library). > Very smooth transition. Even the recall was very fast... > > > *George Rodriguez* > *Specialist II - IT Solutions* > *IT Enterprise Applications* > *PX - 47652* > *(561) 357-7652 (office)* > *(561) 707-3496 (mobile)* > *School District of Palm Beach County* > *3348 Forest Hill Blvd.* > *Room B-251* > *West Palm Beach, FL. 33406-5869* > *Florida's Only A-Rated Urban District For Eight Consecutive Years* > > On Tue, Nov 18, 2014 at 9:17 AM, Hervey Martinez < > [email protected]> wrote: > > > Just wondering if any of you out there have converted your Mainframe's > > HSM > > ML2 from tape to disk? If so, what are the pitfalls? A quick search of > > Google did not yield much; so, just wondering if anybody has done this. > > > > Regards, > > > > Hervey > > Storage Administrator > > > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
