On 1/6/2018 12:27 PM, Mike Schwab wrote:
If your new dasd allows dynamic growing a volume, you can grow a non-EAV to the maximum EAV volume size, but no bigger.
That was my favorite feature of our old DS8100! We lost that feature when we upgraded to DS8870, but so far it hasn't been a problem because we planned fairly well.
Having said that, we're running a bit short on mod-216 volumes. I was thinking about removing eight of our mod-27s to make room for one more of these bad boys! Of course, that kind of re-allocation can be done with the DS8870, just not quite as easily as with the DS8100 because you can't grow a device in place.
The downside to in-place growth is varying levels of support from, and different procedures for, Linux for Z (we use RHEL), z/VM, z/VSE, and older releases of z/OS. You need to be careful or things can go FUBAR in a hurry! (Volume backups are a wonderful thing...)
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