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Дата изменения: Tue Jul 22 17:43:51 2003
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Disk guidelines

Help, I need more disk space!

We currently have 110 Gb of disk storage available on the main file server, Aussie. The individual workstations have about three times this much disk space as well. Here are some tips on how to use this space effectively.

Disks on Aussie are named /data/operational1 and /data/software. While disks on the workstations are named /data/workstationN where workstation is the name and N is usually 1 or sometimes 2.

The disks /data/operational1 and /data/software are generally reserved for "official" system-wide applications such as software, operational data files, etc. Please keep that in mind when adding new directories to these disks. The disks attached to individual workstations are best for storing your working files.

If you need more space, you need to find some first. The "df" command tells you how much space is used and free. For example

df /data/drew1
Filesystem            kbytes    used   avail capacity  Mounted on
drew:/drew/data1     3939600    4120 3541520     1%    /data/drew1

The units are kb so this means that /data/drew1 has 3.5 Gb of free space.

Where should you look?

first look on your workstation's disk. Can you clean up some space? Its often easy to forget large files and directories. A very easy way to find the culprit is to use the "du" command (disk usage). There's a graphical version of this command which shows the relative sizes. Try du /data/drew1 | xdu &
next look on a workstation disk of someone in your group

Please note that all disks are visible from all workstations so there is no loss of connectivity by using a workstation disk instead of the disk on a server. Also note that the workstation disks are backed up just as frequently as the server disks.

In order to make using a workstation disk more convenient, consider the following. If you store files on some other disk, create a link in your home directory which points to the directory. The syntax is:

  ln -s <real directory name> <symbolic name>

For example,

  ln -s /data/drew1/miller/lotsadata /home/miller/lotsadata

now when you do an "ls" in your home directory, you will be reminded that you've got files elsewhere and will be less like to forget them. You can "cd lotsadata" from your home directory.

Shared Resources

We encourage:

a spirit of sharing
good neighbor policy

By sharing, we mean that your local data disk isn't "yours" personally. Please share it as needed for STScI work.

By good neighbors, we mean don't load up someone else's disk with junk, news, mail, ancient files, etc. Its always polite to check with someone before using his disk and to delete those files immediately after they are no longer needed.

Detailed Disk Guidelines

Here are more detailed guidelines for disk usage on the Aussie server.

Disk
Directories
Use
Partition1 (19Gb) system directories Operating system, vendor, & thrid party software.
Partition2 (62Gb) /data/operational1 Operational observing program implemenation and scheduling data.
Partition4 (20Gb) /home

/home is for user home directories.

Partition5 (23Gb) /data/software software source code, testing, executables, development data, etc.

Last Updated July 22, 2003 by Tony Roman

Disk	Directories	Use
Partition1 (19Gb)	system directories	Operating system, vendor, & thrid party software.
Partition2 (62Gb)	/data/operational1	Operational observing program implemenation and scheduling data.
Partition4 (20Gb)	/home	/home is for user home directories.
Partition5 (23Gb)	/data/software	software source code, testing, executables, development data, etc.