Ron...thanks. I think this is possible only with hds. Thanks On Dec 1, 2010 3:34 AM, "Ron Hawkins" <[email protected]> wrote: > Techie, > > Your statement suggests that only internal drives have P-i-T IO consistency > with replication products like TrueCopy and HUR. This is not correct. For > virtualized midrange disks, synchronous and asynchronous replication is > handled by the Enterprise Array providing the virtualization, not the > midrange controller. > > There is no difference in IO consistency at the recovery site whether you > use internal drives or virtualized midrange arrays for a TMM pool (or > anything else). > > Ron > >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of >> techie well wisher >> Sent: Tuesday, November 30, 2010 10:56 AM >> To: [email protected] >> Subject: Re: [IBM-MAIN] VTFM vs TMM >> >> Tiering within the array is the best approach with replication. > Synchronous >> or Asynchronous, Tiering within the array provides better consistent point >> at the recovery site. >> >> On Tue, Nov 23, 2010 at 11:49 AM, Ron Hawkins > <[email protected] >> > wrote: >> >> > Techie well wisher, >> > >> > > >> > > Thanks everyone. Much appreciated. With TMM, of course it goes to >> > expensive >> > > z/os disk, but we do have the option of tiering within the array, such > as >> > > using 1tb drives Raid6 and then hsm them to replicated vts later. >> > [Ron Hawkins] >> > That's not actually true. Cheaper midrange disk arrays can be > virtualized >> > by >> > DASD controllers using a plethora of cheaper brands and models, and TMM > can >> > be tiered outside of the array without any appliance except the array >> > itself. >> > >> > Internal SATA is an optional tier for those controllers that do not > support >> > virtualization of Mainframe volumes. >> > >> > >> > Ron >> > >> > ---------------------------------------------------------------------- >> > 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 > > ---------------------------------------------------------------------- > 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
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