On 3/15/2013 1:22 PM, Roger Harman wrote:
On the 270's, I know it was model/feature dependent. I had a 270-2248 and
concurrent maintenance was not an option.
Concurrent maintenance on disk units has been available since before the
"black boxes" that were introduced in 1995.
If I remember correctly, it came about with V2R3 of OS/400.
Unfortunately, it took almost 10 years before most CEs were willing to
actually do concurrent maintenance on disk units.