On Wednesday, 16 January 2013 07:39:01 UTC, Victor Zhang wrote: > Hello, > > I have a request to sharing TS7700 across lpars belonging to different sms > plex, one lpar created data and the other lpar,away from 2000km+ need restore > the data, how to accomplish this? How to maintain TCDB? > > Regards > > Victor > Victor, Setting up the TS7700 grid and having logical volumes replicated between the clusters is well documented - as referenced in another response. The harder part is setting up TCDB and your tape management system correctly to enable cross-LPAR/sms access to data created in another LPAR.
With no shared DASD between the LPARs your tape system data base (rmm cds/CA-1 TMC) is specific to the LPAR and has no knowledge what the other LPAR wrote to tape - however, you can configure the TS770 to access the logical volumes between the LPARs. Same problem with the TCDB. I can speak for the rmm solution: you could consider rmm client/server support - enabling a single rmm CDS and either LPAR to know details of what is on each volume. Else you can only use 'ignore' support (foreign tape processing). This requires you to know what volumes and what the data set names are on tape. Alos requires authorisation for use. rmm supports either EXPDT=98000 or in more recent releases you can use OPENRULE definitions to allow this processing for ranges of volumes automatically - but still requiring authorization. For OAM, the TCDB cannot be shared, and what I normally recommend is that the system from which you want to read the data you have a specific volcat for the range in question, and pre-define all the volumes you plan to allow to be read as PRIVATE volumes. Together this 2 parts of the solution should enable an easily managed setup. Other options could be available depending on the details. Mike Wood ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
