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Figure 10 Backup to the VLS in a LAN/SAN Hybrid Environment
This includes servers that contain lots of small files that are likely to slow down backup
performance on the host (such as those found on Windows file servers and web servers),
blade servers, etc. Slower servers on the LAN typically interleave the backup through the
media server and go out to one tape drive. These are good candidates for VLS because
you can configure multiple virtual tape drives, disable multiplexing, and then backup
each slow server in parallel (with multiplexing disabled the restores will run faster). See
Multiplexing, Multistreaming, and
your servers in a variety of ways, including using the tools found at in the Software
Downloads section of the Developer & Solution Partner Program web page:
h21007.www2.hp.com/dev/.
Data that you want to electronically off-site using deduplication—enabled replication (and
◦
thus must be backed up to a local VLS which can then replicate the data automatically
to another VLS in another site).
◦
Archive data.
Look for aggregate bandwidth bottlenecks between hosts and backup devices. One common
bottleneck is the LAN bandwidth (for LAN backups), so identify which of the larger application
servers could perform LAN-free backup (see
traffic from the LAN to the SAN.
Multipathing. You can check the true performance of
LAN-free
Backups) and thus move their backup
Analyze the Existing Environment
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