Freecom Ultrium Generation 2, Manual

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24
Performance checklist
The following list summarizes factors that can affect performance. They provide a guideline only
of areas that may need further investigation. They do not attempt to explain how to configure
individual systems.
• Is the tape drive reading and writing data at the correct speed?
• Is the source system (hard disk) transferring data at the correct speed?
• Is the backup application writing buffers at the correct speed? You may need to tune the
transfer, buffer and block size settings to optimize the speed that the application writes data to
the tape drive. Ultrium 460 tape drives have an internal buffer of 64 MB.
• Is the operating system tuned for performance? You may need to adjust the data transfer packet
size.
• If you are in a SAN environment, are you are using one of the recommended fibre channel/
SCSI bridges?
• Are user applications, such as Exchange or database servers, optimized for backup
performance?
• Are there other factors that could be affecting performance, such as interference or fibre
channel infrastructure?
gen2 external oem.fm Page 24 Thursday, February 13, 2003 3:02 PM