To ensure against catastrophic data loss, the college provides
disaster recovery measures for the CLASnet and Networked Writing
Environment (NWE) servers. Other college units who manage their own
computer servers are encouraged to implement similar protective
measures.
-
Policy Limitations:
- Our disaster recovery strategy is for site recovery following a
catastrophic hardware or software failure. This strategy does
not provide fault tolerance nor for recovery from user error.
-
Data Backup:
- All system, departmental, and user data is to be archived (level
0) at least once every fourteen (14) days. An "incremental"
archive (level 1) is to be performed once per day. The level 0
archives are stored off site at a secure location. One level 0
archive per month will be kept for at least six months, in the
event that system rollback is required.
Units with legal data retention or increased backup requirements
will need to provide alternative backup strategies. CLASnet
will work with individual units to provide an acceptable backup
method.
-
Data Restores:
- In the event of catastrophic hardware or software failure, the
latest level 0 archives will be used to reconstruct the CLASnet
computer servers to the last known functional state. System
downtime is not defined, as CLASnet does not provide a
guaranteed HA (highly available) system.
In the event of client computer software failure, CLASnet
will restore any corrupted files from the last incremental
(level 1) archive. It is critical that the unit inform CLASnet
of the failure within one business day so that the file(s) can
be restored. Client computer hardware failure is not covered by
this policy, as no data should be stored on the client system.
In the event of user error, CLASnet may restore corrupted or
deleted files that would take more than one business day to
re-create. These restores will be performed on a "time
available" basis, and may occur at any time during the next five
(5) business days, and will be restored to a same-named file.
-
Mail Restores:
- Mail spools (ie, INBOX) are "ephemeral data,"
temporarily stored on the CLASnet servers. Archives of the
incoming mail spool are not guaranteed to be intact, and so can
not be reliably restored. Users should archive messages in
locations other than INBOX.
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Last updated: Jun 08, 2004 (07:54:04 AM EDT)
URL: http://www.clasnet.ufl.edu/policy/recovery.shtml
