Only DSC accounts with valid FSU accounts are backed up - temporary accounts, eg: SC01, are not backed up

SC provides centralized file storage via panasas1 - a parallel high performance Panasas file system

The system provides a RAID-based storage to ensure against the loss of a single disk drive.

Panasas1 provides home directories and research space for all desktops and pamd.

  1. Users have a fixed disk quota (see below) on their home directory,
    which is based on our current backup capacity. As our backup capacity
    increases, so will user quotas on home directories. Disk quotas are not
    increased otherwise.
  2. Users have three options if more disk space is needed than is
    available in their home directory.
  • Request a research partition by sending a message to This email address is being protected from spambots. You need JavaScript enabled to view it.. A research partition with a maximum capacity of 500 GB will be given to SC faculty members upon request. Research partitions are not backed up. Inactive research partitions will be reclaimed following confirmation from the faculty member.
  • Users can buy disk space on the shared file system in 1 Terabyte increments at our cost. This space will not be backed up and will be available to the user for the life of the system.
Disk Quotas according to user group.

Group                     Soft Hard
=====                     ==== ====
administration            2    2.5
affiliated facuty members 5    5.5
class accounts            1    1.25
facuty members            11   11.5
graduate students         11   11.5
postdoctorates            11   11.5
project staff members     5    5.5
restricted users          1    1.25
system accounts           5    5.5
system administrators     11   11.5
undergraduate students    6    6.5
visitors                  1    1.25
Files on individual desktop systems are not backed up.

Files over 500 MB are not backed up.

Users wishing to protect local files can save these files to the shared file system by mounting their user volume locally (via Samba, sshfs, scp, rsync or other mechanisms) and copying the important files to this directory.


To recover a lost file from any dsk* machine:

cd /backup/users/your_user_name

You will then see a list of directories as follows

  • your_user_name-0
  • your_user_name-1
  • your_user_name-2 :
  • your_user_name-28

The number appended to the user name indicates how many days before the backup was taken.

For example: smith-0 would have been taken early that morning and smith-7 would have been taken 7 days ago.

These directories provide read-only snapshot images of you directory structures at backup time on the the respective days. You can simply copy what is needed into your current directory structure.

No archival data beyond 28 days is maintained.


Backup Technology

The backup system consists of a 10 TB iSCSI configured in Raid 5 with a hot spare with a Dell 1950 acting as the hosting node. Backups are accomplished with rsync.