Glenn Thanks very much. I would not have considered that arrays Lizette
-----Original Message----- >From: Glenn Wilcock <wilc...@us.ibm.com> >Sent: Oct 20, 2014 10:05 AM >To: IBM-MAIN@LISTSERV.UA.EDU >Subject: Re: HSM Recall process > >Back in the day, HSM would process requests from tape in File Block ID order. >But, when tape technology went to a serpentine pattern, processing in FBID >order no longer ensured optimal results for random recalls, so HSM changed to >using 1) Priority 2) FIFO. Clients driving a large numbers of concurrent >recalls from tape found that this resulted in slower performance. So, we >introduced SETSYS TAPEDATASETORDER(FBID). When you know that you will be >concurrently recalling a large number of data sets from a single tape, we >recommend that you enable this parameter. For general processing, we >recommend using the default of Priority. (There are also subparameters to >just enable this for Recall or Recover). > >Glenn Wilcock >HSM Architect > >---------------------------------------------------------------------- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
