RMALOUF@SBCCMAIL.BITNET (04/23/87)
State University of New York at Stony Brook
Stony Brook, NY 11794-5000
Robert Malouf
RMALOUF@SBCCMAIL.BITNET
Marine Sciences
23-Apr-1987 03:49pm EDT
FROM: RMALOUF
TO: Remote Addressee ( _INFO-VAX@SRI-KL.ARPA )
CC: George E. Carroll ( GECARROLL )
SUBJECT: Disk fragmentation and tape handling
Hello,
What are your feelings about the various methods of disk
defragmentation? How important is it? What are are the public domain and
third party products available to do it? Can it be done with plain VMS?
In an unrelated vein, is there any way to record the amount of time a
user has a tape mounted? VMS seems to just record the number of tape
mounts. We have tried some schemes that wrote a time stamp to a file
whenever a user ALLOCATEd or DEALLOCATEd the tape drive, but they were very
messy. Does anyone have any ideas? Is there a PD (both kinds) solution?
Any input would be greatly appreciated.
Thanks in advance,
Rob Malouf
RMALOUF@SBCCMAIL.BITNET
State University of New York
at Stony Brookcarl@CITHEX.CALTECH.EDU (Carl J Lydick) (04/25/87)
> What are your feelings about the various methods of disk > defragmentation? How important is it? What are are the public domain and > third party products available to do it? Can it be done with plain VMS? There are a number of them. How important they are depends strongly on how fragmented your disk is: if you made a copy of your system on an RMO3 with little fragmentation when you installed VMS 4.5, you don't have to worry about defragmenting it (since there isn't enough extra space to get fragmented); if you've got a user disk that has ancient files removed regularly and that tends to be fully utilized and to have some large files on it, defragmentation can make the disk work A LOT better. To defragment the disk using only VMS, you do an image backup and restore of the disk.