By this man a beer! >>> [EMAIL PROTECTED] 06/14/05 12:57PM >>> > > >I'm using DFDSS+HSM+RMM from IBM but I know that Innovation equivalent >products (FDR and FDRABR) are better - performance wise that HSM, >particulary at dataset level (this information is for the performance data >published by Innovation). > >Sometime ago I asked if FDRABR can work in plex mode (ala HSM) where you >can have Master Address Space and Promote Address Space and one will take >over the other if there is a failure. I didn't receive any answer but I >want to know if this is possible. Actually you can have several HSM dump >tasks per dump class beside the master HSM address space. > >For us, the High Availability issue is becoming more important that >performance, in particulary for backup process. > >How FDR and companion products are implemented in plex mode?. Probably >Bruce Black (DASD and I/O professor) can comment about this. > Thanks, Giovanni, I'll put on my professor hat <gr>
The big difference between FDRABR and HSM is that FDR does not have any sort of permanent address space like HSM does. HSM has a permanent started task (sometimes more than one) that handles requests. FDRABR is mostly executed as batch jobs (for backups and archiving) or as started tasks which end when they complete what they are doing. So there is no sysplex complications or recovery. I don't know who you spoke to, but they may have been confused because ABR has no such concept and they may not have been familiar with how HSM works. Auto-recalls of archived (migrated) datasets are often executed as automatically initiated started tasks, but they just restore the requested datasets and terminate. Because of this we think that ABR is easier to setup and administer. BTW, since I am involved in many of the benchmarks we do, I can testify that Innovation goes out of its way to run fair, unbiased benchmarks with real-world data, to the best of our ability. -- Bruce A. Black Senior Software Developer for FDR Innovation Data Processing 973-890-7300 personal: [EMAIL PROTECTED] sales info: [EMAIL PROTECTED] tech support: [EMAIL PROTECTED] web: www.innovationdp.fdr.com ---------------------------------------------------------------------- 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 The information in this e-mail message, including any attachments, may contain confidential and privileged information that is protected by law. It is intended for the sole use of the recipient named above. If you are not the intended recipient or the agent responsible for delivering it to the intended recipient, you are hereby notified that any unauthorized review, use, dissemination or copying is strictly prohibited. If you have received this electronic mail transmission in error please notify us immediately at [EMAIL PROTECTED] and delete any copies from your system. <<<<GWAVAsig>>>> ---------------------------------------------------------------------- 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
