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Backing Up and Restoring Novell eDirectory
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backups. Any changes to the tree that were made on Wednesday morning before the hard drive
failure are lost because Indira was not running roll-forward logs on the server. But Indira is satisfied
with restoring only to last night's backup; she doesn't feel that running roll-forward logs would be
worth the administrative overhead.
16.10.2 Scenario: Losing a Hard Drive Containing eDirectory in
a Multiserver Environment
Jorge at Outdoor Recreation, Inc. has 10 servers running eDirectory. He does full backups every
Sunday night and incremental backups nightly, running the eDirectory backup shortly before the file
system backup to tape.
All of the servers are participating in replica rings. Jorge uses roll-forward logging for all the
servers. On each of his servers, he has placed the roll-forward logs on a different storage device than
eDirectory. He monitors the free space and rights on those storage devices to make sure the roll-
forward logs don't fill up the storage device. Occasionally he backs up the roll-forward logs to tape
and removes all except the one in use by eDirectory, to free up space.
The administrative overhead of turning on continuous roll-forward logging is worth it to Jorge,
because it gives him the up-to-the moment backup required for servers that participate in replica
rings. This way, if he needs to restore a server, the restored server will match the synchronization
state that other servers in the replica ring expect.
In his test lab, Jorge periodically tests his backup files to make sure his backup strategy will meet his
goals.
One Thursday at 2:00 p.m., the Linux server named Inventory_DB1 has a hard drive failure on the
drive containing eDirectory.
Jorge needs to gather the last full backup and the incremental backups since then, which will restore
the database up to the point of last night's incremental backup at 1:00 a.m. The roll-forward logs
have been recording the changes to the database since last night's backup, so Jorge will include them
in the restore to bring the database back to the state it was in just before the hard drive failure.
Jorge takes the following steps:
1. He gets a replacement hard drive for the server.
2. He gets the tape of the full backup for the server from the previous Sunday night.
The batch file he uses to run full backups every Sunday night places the backup file in
/
adminfiles/backup/backupfull.bk
.
He had specified a file size limit of 200 MB in the backup configuration settings, so there are
two backup files:
backupfull.bk.00001 (250 MB)
backupfull.bk.00002 (32 MB)
3. He also gets the tapes containing the incremental backups for Monday, Tuesday, and
Wednesday nights.
The batch file he uses to run incremental backups every weeknight places the backup file in
/
adminfiles/backup/backupincr.bk
.
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