The only problem with leaving it on ML1 is the CPU used to do the compression. Tape compression is in the hardware. ML1 compression is in the software. If you save CPU and don't compress, what is the sense of migrating it in the first place? You might as well leave it on ML0.
Richard Habres AVP; Enterprise Storage Technology Merrill Lynch -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of McKown, John Sent: Tuesday, October 18, 2005 3:53 PM To: [email protected] Subject: Re: Starting Over > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Chase, John > Sent: Tuesday, October 18, 2005 1:37 PM > To: [email protected] > Subject: Re: Starting Over > > > > -----Original Message----- > > From: IBM Mainframe Discussion List On Behalf Of Tom Schmidt > > > > On Mon, 17 Oct 2005 12:50:49 -0500, Chase, John wrote: > > > > >If you found yourself with the opportunity to build (a) new > > >datacenter(s) from scratch, how would you proceed? > > > > > >[ snip ] > > > > I would, for starters, duplex the DASD ("second site" a.k.a. "second > > sight") and I'd consider having no tape library beyond the > > tape drives 'required' for import/export to other sites. > > What would you do about HSM migration level 2? > > -jc- Many people now are saying that DASD is so cheap that even using HSM to migrate to ML2 is counter productive. Just leave it on ML1 and make ML1 very, very large. Or don't even migrate stuff at all. -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology -------------------------------------------------------- If you are not an intended recipient of this e-mail, please notify the sender, delete it and do not read, act upon, print, disclose, copy, retain or redistribute it. Click here for important additional terms relating to this e-mail. http://www.ml.com/email_terms/ -------------------------------------------------------- ---------------------------------------------------------------------- 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
