Data Migration Facility on the Cray and RAID disk on the workstations have supplied disk resources efficiently but we are at 90% utilization and running out of disk space. Please send unfrequently used data to offline tape. Use Cray Reel Librarian on the Cray (see below for instructions) and the DAT, Exabyte, and faster - larger DLT tape on the workstations to archive (tar) data sets. Remove files that are not needed! If a workstation disk fills then Network File System waits for more space (that will never arrive) and demands extra cpu resources setting up a cascade of "hung" workstations. See Keith Brill for a script and suggestions for checking the free disk space before you write and John McCoy for scripts to control tar files. New disk space will be online soon on sgi51 (20GB extra) but this is all that is planed given our budget. The workstations work without problems if we keep our disk utilization under 90%!

Jordan Alpert can be reached by cellular phone at 301-502-0522 or on ext. 7205. Billy Newell can be reached on ext. 7206. (*j*)

A Must Read for Cray Users

Cray3 (C90) Data Migration Facility in conjunction with the Silo tape robot are used to manage the disk area called /dmlite3. /dmlite3 contains or is known as /wd0, /wd2, /c90disk1/g01, /ndska/g01. This system provides backup only to files greater then 0.2Mbyte! This means that source codes, make files, etc... on /wd2 are not backed up since they are usually smaller than 0.2Mbytes. If the /dmlite3 disk is lost, then users lose their small files. Place your small source codes, make files, etc... on the disk /emcsrc3, for example for user wdxxyy:

cd /emcsrc3
mkdir wdxxyy
cd wdxxyy
cp or tar your source and make files here!

/emcsrc3 is an area that is backed up by Cray systems staff and not "floated" to DMF. Users have a small quota limit on /emcsrc3 which is accessible by Cray4&5 as is /dmlite3.
The /wd2 disk on Cray4&5 is located on Cray5 and operates with DMF just like Cray3 /wd2 but is a smaller independent disk area than Cray3 /wd2. If the links are down on Cray 4 one can rlogin to Cray5 and still work with Cray4 &5 /wd2.

Cray Reel Librarian

Cray Reel is like your own private DMF, useful for archiving directories and files. Here is how to use it:


To read back your data, you need to know your ${volsetname} and ${Name_for_your_Stuff} in the same tpmnt command as above, followed by a tar command with xvf instead of cvf. Here are some Cray Reel commands to aid you in this file saving experience.

rlr vslist ;#Lists all your volsetnames rlr volset=${volsetname} vsv ;#Location of your volset*
rlr volset=${volsetname} vsf ;#Lists all files in the volset

*If a Silo tape is not accessed in month, it is moved out of the Silo to the T-room where it is accessed whenever you need it by first, sending an E-mail to the Tape Librarian, Leon.Nathan@noaa.gov and asking him to move your tape from the "T-room to the Silo". In your E-mail specify the volset# as shown from an "rlr volset=${volsetname} vsv" command. It will take one business day to move your tape to the Silo.


Take care to arrange your Silo jobs to work with DMF, especially if you use /dm, as Miss Cray_Manners would not appreciate you keeping the tape transports waiting for a dmget! For example, have one job get all your (most likely) migrated files and then QSUB your Cray Reel job.

Cart90 Tapes

You've heard of these? When a Cray Reel tape is not in the Silo or if you want to work with a tape outside the Silo, we call it Cart90. Here is how to use it:

Date: January 21, 1997 Number 10


Take care to arrange your CART90 jobs to work with DMF, especially if you use /dm, as Miss Cray_Manners would not appreciate you keeping the tape transports waiting for a dmget! For example, have one job get all your (most likely) migrated files and then QSUB your Cray Reel job.

JoHanna Wilding's Column

JoHanna has prepared a pamphlet containing how to access our workstation tape drives and use tar to save datasets. You can get a copy from her and we will post it on the www as well. JoHanna can be reached at x7269 and wd20jh by E-mail. Use mail to send and register your work station problems to the User Support helpdesk. Report your problems to JoHanna or helpdesk@sun1.

Printer Updates


The -v option in the PC lpr command is for PostScript files that are large, more than 2-4MB. In UNIX a -s is used for this. The -h option will cause lpr to not print the header page.

From the CRAYs and Workstations
lpr -P phaser1PS PostScriptFile
lpr -P phaser2PS PostScriptFile
lpr -P fddbgl <ddbgl all files> only workstations
lpr -P fadbgl <adbgl all files> only workstations[
lpr -P SP <PostScript file (Ranjic's office)>
lpr -h -P calps <PostScript file-color Calcomp>
lpr -P ltrhdps <.ps file-Letter Head>
lpr -P ltrhdpcl <HP LaserJet II file-Letter Head>
lpr -h -P trps <PostScript with Transparencies>
(The above 3 printers located in the front office.)
lpr -P phaser2 <Postscript file-REANL printer>
lpr -P ddf <ddbgl-all file types> [
lpr -P adf <adbgl-all file types> [
lpr -P adb <ADBGL ASCII text filename>
lpr -P adp <ADBGL PostScript filename>
lpr -P ddb <DDBGL ASCII & HP file>
lpr -P ddp <DDBGL PostScript filename>
lpr -P ddv <DDBGL 132 column file>
lpr -P ddh <DDBGL HPGL file>
lpr -P ddt <DDBGL tektronix code file>

[ Coming soon