Cautions Concerning Backup - Fujitsu PRIMERGY LTO4 User Manual

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Cautions Concerning Backup

This chapter explains the points to note about backup operations for this product.
When using this product in Windows Server 2008, Windows Backup does not
support backup to a magnetic tape drive. Purchase of separate backup software is
required.
Ejecting the data cartridge after backup
• Do not leave the data cartridge in this product.
Doing so makes the data cartridge wear faster, because the longer it is used, the faster it wears. The
tape recording surface of the data cartridge is exposed when inserted in this product and if it is left
in this state for a long time it will easily be affected by suspended particles of dust.
Insert the data cartridge just before the backup operation, and remove it immediately after the
operation.
• Do not turn off the power with the data cartridge inserted.
If the power is turned off with the data cartridge inserted, it takes a while before this product can be
used after the next power-on.
Data compression rate
This product has a data compression function included in the hardware.
Although the data compression rate is approximately 200%, it varies depending on the data content.
Data that has already been compressed by software is not effected by this product.
Some backup software has a data compression function prior to transfer, however, do not compress
data by software if the hardware compression function is on.
Backup performance/capacity
The backup performance and backup capacity that can be used in one data cartridge varies depending
on the following factors:
• The conditions (attrition, dust, etc.) of the recording surface of the data cartridge to be used.
• The dust and dirt condition of this product magnetic head
• Data compression rate
• The workload on the server
Performance may degrade depending on the server configuration (RAID
configuration or hard disk performance). Also, performance degrades when
performing backup via network.
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