&           Software Product Description  .           GCE Deletion Protection System (DPS)  H           Description: The GCE Deletion Protection System is designed toF           provide protection against accidental deletion of file typesD           chosen by the site, and to allow files to be routed by theI           system to backup media before they are finally removed from the J           system. This is accomplished by an add-in to the VMS file systemC           so that security holes are not introduced by the system's            action.   I           The user interface is an  UNDELETE command which permits one or H           more files to be restored to their original locations providedM           it is issued within the site-chosen time window after the undesired J           deletion took place. In addition, an EXPUNGE command is providedH           which allows files to be deleted at once, irretrievably, whereJ           space for such is required. Provision for automatic safe-storingB           of files prior to final deletion is present also in DPS.  H           DPS is implemented as a VMS file system add-in which functionsJ           by intercepting the DELETE operation and allowing the file to beI           deleted to be copied or renamed to a "wastebasket" holding area J           pending final action, and to be disposed of by a disposal agent.J           The supplied agent will allow a site script to save the files ifH           this is desired, and then finally deletes any files which haveB           been deleted more than some number N seconds ago. If theJ           UNDELETE command is given, the file(s) undeleted are replaced inJ           their original sites. The supplied system can also be configuredI           to rename files to a wastebasket area or to copy them directly, J           for undeletion by systems people only. (These options are faster-           than the site command file option.)   H           DPS can be configured to omit certain file types from deletionI           protection (for example, *.LIS* or *.MAP* could be omitted), to I           include only certain files in the protected sets, or both. This H           can reduce the overhead of saving files which are likely to beD           easily recreated, or tailor the system for such actions asC           saving all mail files (by selecting *.MAI for inclusion).   H           In addition, DPS monitors free space on disks, and when a fileH           create or extend would cause space exhaustion, DPS runs a siteH           script. By setting this script to perform final deletions, DPSJ           can be run in a purely automatic mode in which deleted files areE           saved as long as possible, but never less than some minimum )           period (e.g., 5 or 10 minutes).   G           DPS files can be stored in any location accessible to VMS. If G           they are renamed, they must reside on the same disk they came B           from. Otherwise they can be stored in any desired place.  A           DPS is installed and configured using a screen oriented @           configuration utility to set it up, and basically runs$           unattended once installed.  *           Supported Hardware and Software:  B           DPS runs on any VMS Vax or Alpha/AXP platform. On Vax itI           supports VMS 5.5 or later. On AXP it supports VMS 6.1 or later. H           Internally, DPS uses only published and supported internal VMSI           interfaces, and thus is  independent of which file system is in I           use. However, its use with third party file systems such as NFS G           client systems is untested and should be tested before a site &           commits to using it heavily.  B           DPS is available for 45 day trial use licenses or can beJ           licensed permanently. DPS is required on every node of a clusterF           using it, or its benefits will not be available on nodes notD           having the software running. Apart from this, there are noB           problems with having DPS available on only part of a VMS           cluster.  $           Deletion Protection System  (           General Cybernetic Engineering           Glenn C. Everhart            18 Colburn Lane            Hollis, NH 03049*           603 465 9517 (Fax: 603 465 9518)             Everhart@GCE.Com           (Everhart@gce.mv.com)   