Cautions Concerning Backup - Fujitsu PRIMERGY LTO2 User Manual

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Cautions Concerning Backup

This chapter explains the points to note about backup operations for this product.
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. Insert the data cartridge just before the backup operation, and
remove it immediately after the operation.
Data compression rate
Although the data compression rate is estimated to be approximately 200%, it varies depending on
the data contents. For the data that was already compressed by software, the compression effects by
this product cannot be expected.
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 head
• Data compression rate
• The workload on the server
Points to note during system configuration
When using a single data cartridge over and over, all the data can be lost in the event the backup fails.
The damage in the event of trouble can be minimized if two or more data cartridges are used for
backup operation.
Example: Using different data cartridges for each day of the week.
5 Cautions Concerning Backup
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