We are getting conflicting recommendations from HP on selecting LUN sizes for our HP UX 11 boxes. The Storage Works EVA formal documentation is suggesting using a single large virtual LUN and the EVA HP installation folks are say we should break a request for storage into multiple 30 – 40 GB virtual disks.
I was wondering if anyone out there has some practical experience one way or the other. And I also very interested in how you came up with the recommendation.
I have looked at the scsictl command to see if maybe change the Queue Depth from the default of 8 to something higher for large LUN’s , Turning off Queue Depth flow control if that is possible on HP UX 11+ (I know I can do it on AIX for a ESS solution).
ed
Ed Skolnik
I was wondering if anyone out there has some practical experience one way or the other. And I also very interested in how you came up with the recommendation.
I have looked at the scsictl command to see if maybe change the Queue Depth from the default of 8 to something higher for large LUN’s , Turning off Queue Depth flow control if that is possible on HP UX 11+ (I know I can do it on AIX for a ESS solution).
ed
Ed Skolnik