This application puts about 10,000 files a day on its minidisk. The application owner wants to keep a month's worth of data online. Given 64 bytes per file and 14M usable, that is approximately 230,000 files. That would be exactly a full working month.
I am trying to convince the application owner to archive more frequently or go to a weekly basis as it is approaching an architectural limit. By the way, there is noting wrong with either minidisk. They just contain a large amount of small files. -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Schuh, Richard Sent: Wednesday, April 29, 2009 9:22 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: How Many Files Can Be on a Minidisk Before It Cannot be ACCESSed? If there were nothing else below the 16M line except for FST, the maximum is 262144. Start with that number and subtract 64 for every page < 16M that is otherwise occupied. This is obviously less than the 279711 files on your 2 disks. Is it possible for you to limit what gets put in the FST by accessing by mode number (acc 999 x/x * * x2)? Another possibility would be to put the files in SFS and use them without accessing the directories, or by using subdirectories to limit the number of files accessed. Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:ib...@listserv.uark.edu] On Behalf Of James Stracka (DHL US) > Sent: Wednesday, April 29, 2009 8:59 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: How Many Files Can Be on a Minidisk Before It > Cannot be ACCESSed? > > It is a CMS architecture limit. Do not make me go to IBMIN. > > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:ib...@listserv.uark.edu] On Behalf Of Imler, Steven J > Sent: Wednesday, April 29, 2009 8:44 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: How Many Files Can Be on a Minidisk Before It > Cannot be ACCESSed? > > Are you sure the minidisk is not corrupted? Do you have a > backup product that might help to tell you that it is? > > > JR (Steven) Imler > CA > Senior Sustaining Engineer > Tel: +1-703-708-3479 > steven.im...@ca.com > > > > > > -----Original Message----- > > From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] > On > > Behalf Of James Stracka (DHL US) > > Sent: Wednesday, April 29, 2009 11:36 AM > > To: IBMVM@LISTSERV.UARK.EDU > > Subject: How Many Files Can Be on a Minidisk Before It Cannot be > ACCESSed? > > > > We have a minidisk with 152715 files on it and another with 126996 > > files. Since the FAT is below the line, we cannot access both of > these > > minidisks concurrently. > > DMSACP109S Virtual storage capacity exceeded > > > > Given that the "S" and "Y" disks as well as CMS take storage below > 16M, > > does anybody have an idea of approximately how many files > will go on a > > minidisk (I suppose an SFS directory will have the same concern) > before > > it cannot be accessed? >
