On Wed, 23 Sep 2009 23:21:45 +0800, Brian Fraser <[email protected]> wrote:
>We have 2 SMSPLEXES within a bronze SYSPLEX. > >GRS is common to all LPARS, but most everything else is not. > >Now we have a new DB2 application coming that will require application >datasets which will be required to be written to from all LPARS in the PLEX. > >I've shared volumes before by having a storage group which is written to >from one SMSPLEX being online and in read mode from another plex with no >problems, but for both sides to be able to allocate, write & extend datasets >then I'm wondering if there's any gottchas coming at me. > >We can create the same Storage Group on both SMSes and define all the same >volumes within. Of course we need to have procedures in place to ensure that >someone doesn't go adding or removing volumes to one side and not the other. > >We also need to make sure that HSM cant migrate datasets from these volumes >because the other HSM wont be able to recall them. > >My only real concern, is will it all hang together if/when one of these dsns >goes into extents on another candidate volume. > >Will this cause any problems to any LPAR thats not in the SMS that performed >the extend? > >Brian Although I don't recommend it, it can be done. The main thing is to keep all the ACS routines and storage groups consistent. Since GRS is common, you don't have to worry about data set integrity or issues with sharing PDSE / HFS across SMS. (someone already mentioned this as a problem, perhaps they missed the part about this being a bronze sysplex) Please read this post and thread where I talk about the caveats. At least the ones I know of. "Re: how-to Sysplex? - the LOGR and exploiters part" http://bama.ua.edu/cgi-bin/wa?A2=ind0908&L=ibm-main&D=1&O=D&P=178760 Regards, Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[email protected] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- 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
