Hi, With a z/VM7.3 with the last RSU and a z/OS2.5 I met this week a performance problem for a client who restores on our site.
My z/OS is required to restore the z/OS client's bootstrap. When done I need to change several things for him to IPL. It means that the dasd are shared between my z/OS and his. I let my z/OS active, no reason to stop it. The client IPL his z/OS and sends his restores. Checking DASD throughput we are at 1/3 speed that it should. After spending the day to search, I forced my z/OS.... then all the speed was there for the client. I wonder how my z/OS could impact client's restore just because I access the dasd, doing absolutely nothing on it. This morning I did a backup of client's data, the speed seems ok. Now I restore and the speed is down to 1/3... It looks like z/os brakes througput… If you have any clue : I can test. An issue is opened. Regards Alain ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
