White paper, Disk to disk (d2d) backup – QLogic 2500 Series FC HBAs Accelerate Application Performance User Manual

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hSG-WP08005

PX2832001-00 rev. B 09/11

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Microsoft Exchange Measured by IOmeter

Disk to Disk (D2D) Backup

the introduction of the QLogic 2500 Series 8Gb FC hBa continues to reduce
the time required to back up large application databases to secondary
storage. tape continues to be the preferred medium for long-term, off-site
archival storage of data, but Virtual tape Library (VtL) and D2D continue
to grow and users continue to look for efficiencies to insure that the data
is “backed-up”. the amount of data that organizations need to archive
is constantly increasing, due to disaster recovery support, immediate
backups, and government regulations requiring stored data. 8Gb provides
robust, high speed FC performance that reduces the backup window
and disaster recovery time. the following figure shows the performance
increase between 8Gb and 4Gb backup performance.

Backup Performance, 4Gb versus 8Gb

Deploying 8Gb Fibre Channel today prepares the data center to take
advantage of reduced backup windows and data-migration in D2D and data
replication environments. the added throughput also alleviates pressure
caused by sustained data growth rates and eliminates bottlenecks in the
SaN. the following figure illustrates an increase of 100 percent in backup
performance from 4Gb to 8Gb.

D2D Backup Performance

as shown in the following figure, the performance increase results in
decreased D2D backup time. the illustration shows how the back-up
windows are halved at every technology transition, which reduces the total
Cost of Ownership (tCO) by building higher efficiencies in data centers,
decreasing the time it takes for backup.

Time to Backup 14GB of Data

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