"There are two types of people. Those who have lost data and those who will." Retrospect advertisement
Server Backup 1. Why Backup 3. Types of Backup 4. Backup Hardware 5. Backup Software 6. Backup Hints 2. What to Backup 7. Questions
Why Backup Prevent data loss due to: –Hardware failures –Software failures –Deliberate User actions –User mistakes –Carbon-based problems –Pebkac, ID 10 T errors or other user related problems, –Flood/Fire/Storm and other acts of god –Theft and Vandalism
How data dies Hardware Failure:42% Human Error:30% Software Corruption:13% PC Viruses:7% Hardware Destruction3% Source: http://www.backup.com/learnmore_why.html
What to Backup All data/files which can not easily be replaced. –Student and staff data files –NDS / AD data There is no need to backup: –Operating System files –Application or Program files (files with the.EXE,.DLL, or.INI extensions) –Temporary files (files with the.TMP extension) –Scan Disk Error files (files with the.CHK extension)
Types of Backup Full Backup –Backup of all files in set. Incremental Backup –Backup of all files which have changed since last backup. Differential Backup –Backup of all files which have changed since last FULL backup.
Backup Hardware - Tape + Media re-usable + Large Capacity DLT – 40/80Gb – 160/320 Gb + Quick - Expensive, DLT Drives >$1700 DLT Tapes >$70 (20/40) DAT Drives > $1000 DAT Tapes > $20 (20/40 Gb) Magnetic Tape Drives - DLT, DAT, AIT, Travan
Backup Hardware – External HDD + Inexpensive $ 120 for case $ 140 for 160 Gb drive $295 for 120 Gb Maxton One Touch Including Retrospect Express Backup software – Mac + PC + media re-usable + Very Large Capacity 80 Gb – 300 Gb + Quick – 400 Mb/s + Portable Can be used on any computer/Server with USB/Firewire. - Size - Vulnerable to shock damage - Requires USB 2 or Firewire to achieve speed Hard disk drives in external Case with USB 2 and/or Firewire Connections
Backup Hardware – NAS + media re-usable + Very Large Capacity 80 Gb – 500 Gb + Quick – 100/1000 Mb/s + Versatile Can be used to backup any Server/Workstation on LAN - Expensive $ 1200 for 160 Gb drive $ 2000 for 500 Gb drive - Cannot be taken Offsite Network Attached Storage
Backup Hardware – Cartridge + media re-usable + Quick + Inexpensive + $650 for Drive + Comes with backup software (Mac & PC) + Easy to move offsite. -Media is costly -$ 95 for 35/90 Gb Cartridge Iomega REV – USB2.0 or Firewire
Backup Software - Windows Backup Exec (Windows / Netware) –Free to schools –ftp://software.det.nsw.edu.au/Backup%20Exec91%20Win/ftp://software.det.nsw.edu.au/Backup%20Exec91%20Win/ MS Backup –Free – Part of standard install Backup4Win –Free - http://www.back4win.com/http://www.back4win.com/
Recommended Backup Routine Incremental backups during cycle Full backup at end of cycle Backups done after normal operating hours –You can not backup files currently in use/opened E.g. –7 Day Cycle (Friday – Thursday) –Friday – 7pm – Incremental –Monday – Wednesday – 7pm – Incremental –Thursday – 7pm – Full –No Backup on Saturday, Sunday –Media replaced each Friday Morning
Recommended Backup Routine At least 3 backup cycles/sets –Provides history annuallyMedia replaced annually regularlyBackup verified regularly Always check logs Use task scheduler to automate backup OFF SITEBackups kept OFF SITE –i.e. Off school grounds.