Ken, I think IBM call them "extent space efficient volumes" and they were announced in the previous DS8700 generation.
There are a few hits on IBM web sites that talk about using and implementing ESE on the DS8870, but you would have to check with IBM to see if this is a licensed feature. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Ken Smith > Sent: Thursday, May 1, 2014 2:24 PM > To: [email protected] > Subject: Re: [IBM-MAIN] New install library size > > Not all disk subsystems do this. Don't think my new DS8870 does, but don't > know if it was an option. > > Ken > On Thu, May 1, 2014 at 4:53 PM, Ron Hawkins > <[email protected]>wrote: > > > Yeah, what he said. > > > > > > > > This goes along with my response to this thread: people are still > > piddling > > > around with mod 9's and even mod 3's? Once dynamic pooling became > > > available on our Hitachi VSP I reconfigured all our volumes to mod 54's. > > I've > > > provisioned volumes with 120% of the array's physical capacity, but > > > only > > 60% > > > of that physical capacity is actually in use, so I'm good. I have > > > fewer > > volumes > > > to worry about, and I can let the storage controller worry about > > performance > > > and efficient use of space. > > > > > > It's the 21st century; let's live like it. > > > > > > -- > > > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, send > > email to [email protected] with the message: INFO IBM-MAIN > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
