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Administrative Computing > Policies & Procedures > Backup Procedures

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SCSU Backup Procedures
March, 2005

Previous

Prior to November, 2004 , backups were run separately for UNIX and Windows servers.

 

UNIX

Windows

Hardware

Major servers (email, portal, WebCT) back up to a single DLT library with 2 drives.   Smaller servers have direct attached tape drives

3 major servers each have a direct attached 7 tape changer.   Smaller servers have direct attached single tape drives.

Software

Veritas NetBackup 4.5

Veritas BackupExec

Procedures

Nightly full backups.   Off site storage of tapes once a week.   Backup window is 10-12 hours.

Weekly full backups.   Nightly differentials backups.   Off site storage once a week.   Backup window for full backups is over 20 hours.   Largest server exceeds tape capacity.

FY 05  

A new backup network was implemented in the JE 128 Data Center in November, 2004.   A copper based Gb network has been installed to provide a separate network for backup traffic only.   Additional Gb NICs have been installed on all major servers for backup I/O.

A SUN Sunfire V440 was installed as a master backup server. It is attached to a SUN L100 tape library with 4 LTO2 drives and has the capacity to hold 60 LTO tape cartridges. (LTO drives will increase the capacity of each tape cartridge from 80 GB to 320GB, as well as significantly increase throughput).   The L100 library can be upgraded to support 6 drives in the future.

All servers (Windows and UNIX) will be backed up using Veritas NetBackup v5.   NetBackup supports both platforms for backup, as well as shared access to the L100 tape library.  

Procedures have changed as a result of the backup upgrade. Currently, full backups are done on a daily basis on all servers. Weekly backups are stored still stored off site.

FY06 (planned)

Future plans include migration to disk to disk to tape (D2D2T) backup within the next year.   Cheaper arrays of storage can be added to the V440 backup server. This will do 3 things:

  1. significantly decrease the nightly backup window
  2. provide much faster restoration of files when needed
  3. add another layer of redundancy for data protection

Backup to tape can then be done from the backup disk during the day with no impact to the production system.