On Mon, Nov 10, 2014 at 3:44 PM, R.S. <[email protected]> wrote: <snip>
> Provide more details. Your configuration and your real needs. There are > several solutions, suitable for different scenarios. > Some general remarks: > * For virtual tapes you have much more tape drives, so maybe you can make > static assignment devices to LPARs/systems. It's convenient. > * For real tapes the above could be unreachable due to lack of drives. You > can think about ATAM or similar solution. > * Sharing drives does not mean sharing tapes. > * You can share your tapes or not. You can assign set of tapes to every > LPAR/system. > * VOLCAT means IBM-like tape library. It is typical for 3494 and > successors, as well as VTS and successors, but it is not typical for > STK/Sun/Oracle libraries. > * Other solutions (MDL, Luminex) may use MTL (Manual Tape Library) > definitions. > * Already mentioned ATAM relieves nightmare or VARY ON/OFF drives. > * GRS is not required for VOLCAT sharing or SMSplex CDS sharing or any > other multi-host solution in concern. It can be "nice to have". > * OAMplex (VOLCAT sharing), SMSplex, CA1plex, etc. in ideal world should > be equal, but it is not required. > * GRS does not require sysplex, but it does require CTC (or sysplex). > R.S. pointed out that I misunderstood the book when _I_ said that GRS must be contained within a single Sysplex. What I was looking at is: http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2g490/3.2.2 <quote> *Note:* Global resource serialization ring complexes can contain XCFLOCAL, MONOPLEX, or systems that are part of a multisystem sysplex. However, only one multisystem sysplex can exist in any global resource serialization complex. </quote> At the time, I was trying to make a GRSPlex between two separate multisystem basic sysplexes. _That_ doesn't work. But you're scenario does. Mea culpa. But I would still go with a CTC based _Basic_ Sysplex. > * GRS for non-sysplex means ring configuration which is not very fast and > require some setup to behave as it should be. Think twice before > activationg it. (my humble opinion) > > HTH > > -- > Radoslaw Skorupka > Lodz, Poland > > -- The temperature of the aqueous content of an unremittingly ogled culinary vessel will not achieve 100 degrees on the Celsius scale. Maranatha! <>< John McKown ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
