Re: EMC Dasd and Performance Issues

2008-03-30 Thread Douglas Shupe
To: IBM-MAIN@bama.ua.edu Sent: Thursday, March 27, 2008 9:29 AM Subject: EMC Dasd and Performance Issues I am supporting the DMX3 Disk Array from EMC. We have been experienceing some performance issues with our Timefinder Snap process. According to EMC this issue occurred due to microcode level

Re: EMC Dasd and Performance Issues

2008-03-28 Thread Lizette Koehler
No, we share the frame with the mid range (Unix) side of the shop. However, we do not use the same disks in the box, Mainframe dasd is mapped on separate volumes from the Mid range dasd; I am told there is no intermingling... Lizette Not sure of our microcode level,.. But is your DMX used

Re: EMC Dasd and Performance Issues

2008-03-28 Thread Gabe Torres
. (not complaining about EMC Disk. It has serviced us well) gabe -Original Message- Subject: Re: EMC Dasd and Performance Issues No, we share the frame with the mid range (Unix) side of the shop. However, we do not use the same disks in the box, Mainframe dasd is mapped on separate volumes

EMC Dasd and Performance Issues

2008-03-27 Thread Lizette Koehler
I am supporting the DMX3 Disk Array from EMC. We have been experienceing some performance issues with our Timefinder Snap process. According to EMC this issue occurred due to microcode level 5671. We did this upgrade 18 months ago and just now saw this issue and got it resolved. I am just

Re: EMC Dasd and Performance Issues

2008-03-27 Thread Ambat Ravi Nair
Liz, just how were the SNAPs affected ? do you have SRDF/A involved ? - ravi. On Thu, 27 Mar 2008 09:29:51 -0400, Lizette Koehler [EMAIL PROTECTED] wrote: I am supporting the DMX3 Disk Array from EMC. We have been experienceing some performance issues with our Timefinder Snap process.

Re: EMC Dasd and Performance Issues

2008-03-27 Thread Lizette Koehler
We are snapping 198 volumes. For the past several months it has been taking 20 mins to snap. As of Feb 08 it took 40 mins to snap. After EMC cleaned up some table it now runs in 14 Mins. SRDF/A is not involved. We are snapping a source volume to another volume on the string we call SNPxxx.

Re: EMC Dasd and Performance Issues

2008-03-27 Thread Gabe Torres
Not sure of our microcode level,.. But is your DMX used only for Mainframe storage? We had an instance where our P Series processors effected our mainframe storage performance. --cut I am supporting the DMX3 Disk Array from EMC. We have been experienceing some performance issues with our