We have a few small z/OS 1.9 images which have no tape access and use HSM to backup the data to a 3390 mod 27. Here's the DASD related parms we use for HSM.
SETSYS USERUNITTABLE(3390) SETSYS CDSVERSIONBACKUP( - BACKUPCOPIES(4) - BACKUPDEVICECATEGORY(DASD) - BCDSBACKUPDSN(DFHSM.xxxx.BCDS.BACKUP) - JRNLBACKUPDSN(DFHSM.xxxx.JOURNAL.BACKUP) - MCDSBACKUPDSN(DFHSM.xxxx.MCDS.BACKUP) - OCDSBACKUPDSN(DFHSM.xxxx.OCDS.BACKUP) - DATAMOVER(DSS) - ) SETSYS COMPACT(DASDBACKUP - DASDMIGRATE - NOTAPEBACKUP - NOTAPEMIGRATE) SETSYS BACKUP(DASD) SETSYS DSBACKUP(DASD(TASKS(10)) TAPE(TASKS(0) - DEMOUNTDELAY(MAXIDLETASKS(0) MINUTES(60)) /*-----------------------------------------------------------*/ /* ADDVOL ENTRIES FOR BACKUP VOLUMES */ /*-----------------------------------------------------------*/ ADDVOL xxxxxx UNIT(3390) BACKUP (DAILY(1)) Terry Traylor charlesSCHWAB TIS Mainframe Storage Management Remedy Queue: tis-hs-mstg (602) 977-5154 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Bri P Sent: Monday, October 06, 2008 7:10 AM To: IBM-MAIN@BAMA.UA.EDU Subject: HSM DASD Backup volumes I'm setting up HSM to backup to DASD instead of tape. I can't figure out how best to set up the disks though; whether to have a (increasingly?) large number of daily backup volumes like I did with the tape volumes, or a small amount of daily backup volumes and a (increasingly?) large number of spill volumes? If I have a small number of daily backup volumes, how many do I put in it? Enough to contain just a day's worth of backups? Enough to have one volume per running backup task? Are there any performance considerations to take into account? Anything else to consider? Thanks in advance Brian ----------------------------------------- Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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