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ISecureDat provides several backup types for your data files.
Select the one you feel best suites your needs.
Incremental:
This backup method is recommended for general files and Exchange Server Data (Mailboxes).
This system does a full backup the first time it runs and then backs up only new files.
Entire files will be backed up which have been modified since the last backup. Then, after
they are backed up, the files will be marked on the disk as having been backed up. This is
ISecureDat's default system and most widely-used method of backing up data files.
Differential:
Entire files will be backed up which have been modified since the last backup, the same as
incremental. However, after the files are backed up, they will not be marked as having been
backed up. The reason for this option is in case you also want to do tape backups as well
as remote backups. Since your tape backup software relies on the marks placed on the files
to determine which files need to be backed up, you don't want marks added before the
tape backups are made.
Full:
Entire files will be backed up regardless of whether they have been changed or not since
their last backup. This is the least-used option because it results in the largest backup
sets and the longest on-line times.
BitBackup:
BitBackup is considered a special form of incremental backup. The first time that a BitBackup set is executed all files in the selection list are backed up - irrespective of the archive flag on the files. However, in subsequent runs, only files which change (as indicated by the file archive flag) are backed up.
This option creates sub-file or "patch" backups which creates the smallest backup and takes the least amount of time. It is the recommended default setting for large files such as databases, Outlook personal storage files (PST files - email), large documents and any other data files which change only modestly each day. These are all ideal candidates for a BitBackup.
Warning: Due to disk cache requirements, use of the BitBackup feature on PCs with less than 5 GB of free disk storage is not recommended. Keep in mind that the requirements for local storage typically requires one-and-half times the disk space as the original data size. If the total size comes to 10 GB, be sure to have at lease 15 GB of free space for the local store.
BitBackup maintains copies of the most recent versions of the files it backs up to the ISD Server on a local Data Store first. Restoring from the local Data Store is automatic and VERY fast - depending of the speed of the local Network or disk buss. The most common restores are done from the local Data Store instead of from the ISD Server which means the local Data Store acts as a "hot spare" for backups, mirrored to the ISD Server. Depending on the file's sizes being backed up, your C:\temp\rbackup\bitbackup folder can become very large using up your hard drive's empty space. At this point BitBackup will not function because it doesn't have enough elbow room to work in. It will connect with the backup server, but no files will be transferred.
It is strongly suggested that if BitBackup is your preferred choice of backup type, you redirect your "temp" file away from the main (C:\) drive. We suggest an external LAN drive with a USB connection. This will make file transfers faster without slowing down your network. An additional advantage is the fact your will now have two up-to-date copies of your data. One on the LAN drive and a second on the ISecureDat server. Contact for information on how to open the secured administration panel within your "Client Agent" to redirect your "temp" folder.
BitBackup is the recommended backup method used for SQL Server (databases). Go here for a more detailed understanding of how BitBackup works (PDF).
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