Antonio, As far as I can see the CFW commands always apply to the whole subsystem, and have never applied to a single volume.
My past experience is that subsystem means the whole Storage Controller. My recent experience is with HDS only and this is how the command operates still. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Antonio Cecilio > Sent: Thursday, 19 April 2007 12:08 AM > To: [email protected] > Subject: Re: CACHEFASTWRITE > > Thx Jon and Ron for your replies. > The reason for this question is about moving volsers from HDS and IBM > storage cabinets to a new HDS storage using FDRPAS. > Before running the move process we have to put CFW OFF for the source > volser and are seeing for IBM cabinets SETCACHE OFF is working at ssid > level > and from HDS it's working on "storage cabinet level" runing the same > IDCAMS > job. > However after reading 3990/9390 Recovery Guide (on BOOK format) it's > stats: > "4.4.1 Activate or Deactivate Cache Fast Write for a Subsystem > > You can activate or deactivate cache fast write by entering the following: > > //SETCACHE JOB ... > //STEP1 EXEC PGM=IDCAMS > //SET01 DD UNIT=3390,VOL=SER=VOL123,DISP=SHR > //SYSPRINT DD SYSOUT=A > //SYSIN DD * > SETCACHE FILE(SET01) CACHEFASTWRITE ON/OFF > > The SET01 DD statement specifies a 3390 unit for which cache fast write is > to > be allowed, and specifies volume VOL123. The SETCACHE > command parameters are: > > VOLSER specifies VOL123. > UNIT specifies the 3390. > CACHEFASTWRITE ON specifies activating cache fast write for the > subsystem containing the indicated volume. > OFF specifies setting cache fast write off for the subsystem." > > As far as I understand "subsystem" is the "storage cabinet" or all volsers > for all > SSIDs. > I couldn't understand, so far, the different IDCAMS/SETCACHE CFW output > behaviour for different "storage cabinets". > > Am I missing something here ? CAn you pls give me an hint?? > MAny thx once more, A.Cecilio. > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
