Data Protector Express User's Guide (TC330-96002, October 2010)

Auto V erify mod
e
After Data Prot
ector Express b acks up a set of data, it can verify that the data was backed up correctly.
Data Protector Express reads the files from the media and performs the selected verification type. If any
discrep a ncies bet ween the two files are found, the fi le is reported in the job log.
Full V erify This setting instructs Data Protector Express to compare every selected file stored on the m edia
with the original file from the PC desktop or file or application server. If the file has changed since it was
backed up, the full verify process will report that the file on the media does not match the file on disk.
This does not
mean that the backup was unsuccessful.
Quick Verify This setting instructs Data Protector Express to be certain that every filebackedupontothe
media is in readable condition. It does not verif y that the data matches the file, only that the data stored
on the media can be read.
No Verify This setting
instructs Data Protector Express to skip the verification step. It is not recomm ended.
TIP:
Verifying th
at data has been correctly written to the media is an essential part of a comprehensive backup
program. Al
so, verifying the files ensures that the media and the media drive are working correctly.
Write mode
F or automatic rotation jobs, Data Protector Express overwrites all media. F or other jobs, Data Protector
Express uses the write mode settings set by the user. This mode determines whether the old data on
the media is overwritten with new data or whether the new data is appended to the end of the old
data. When m edia is overwritten, all of the data previously stored on it is lost. Appending data will
preserve the old data.
Append to all media This setting instructs Data Protector Express to append all data to the end of the
media. No data is overwritten. Select this setting for permanent storage.
Append to first media, overwrite others This setting instructs Data Protector Express to append data to
the end of the first media, but to overwrite all media that follows. For example, D a ta Protector Express will
not over write the first media inserted, but will overwrite the second, third and later media. This setting is
useful if you have a set of media with old data you no longer need. By selecting this option, Data Protector
Express preserves your most recent data on the first media, but overwrites older, unneeded media.
Overwrite all media This setting instructs Data Protector Express to overwrite all media. All data on
media that is overwritten is lost. Use this option for media that are going to be recycled.
Split F ile
The Split File mode determines how Data Protector Express will handle a file if the file is too large to fit
on the current media. Selecting this option to instruct D ata Protector Express to split a file across two
media if it will not fi t on the current backup m e d ia. If this o ption is n ot selected then fi le that don’t fiton
the media will be restarted on the next media.
WARNING!
If you use the split file option, files that span two media will require both media for restore. If one is
lost then the file cannot be recovered.
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Backup Jobs