HI, What is now start to be popular is the MFNetDisk replication. Special thank to Europe. MFNetDisk replicates 512 real disks (IBM, EMC or HDS) to PC storage without any overhead in MF and very small in PC. MFNetDIsk will never delay IO to real disk. MFNetDIsk will never change the IO to real disk. In case of problem in replication, MFNetDisk never cause problem to the real disk. You can have 7 mirrors for each real disk (total 8). Easily you can add unlimited mirrors for each real disks, but in most cases 7 copies is enough. You can mirror real disk to another real disk in remote. The remote will be one of the mirror of the real disk. You can mix mirrors type remote real disk or local PC file type AWS (support by IBM ZPDT and more) and MPC (MFNetDisk internal format). If you ask me to make it 4k read disk replication instead of 512, I will need to patch one of my module and it is done. You can ask the MF to stop to send request to Sync and keep the required tracks change in MF and it will be done using the F MPC,NOPC=Y. When you like the Sync to restart, just run the F MPC,NOPC=N and in a seconds all the lists changed tracks will be sent to PC and the fast Resync will start. I think that now is the time to try the replication. Tapes emulation was tested by many users. The code is now stable. Disk emulation is stable for very long time, so there is no risks to use the disk emulation as well.
Thanks, Shai Hess, MFNetDisk product. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
