Many-To-One Example Using Mixed Wan Link Speeds - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

Figure 36 Many-to-One Example using Mixed WAN Link Speeds
.
Here are four remote sites replicating 100 GB and 500 GB backups daily into a central D2D4000.
Note also that the central D2D4000 has 2 x 1 GbE connections from the central router for link
aggregation.
Follow these guidelines for the best approach to a many-to-one scenario:
• Size each of the individual links separately.
• If possible use the "blackout window" settings to stagger the replications throughout the day to
ensure there are not greater than eight replications active at any one time.
• Be careful with bandwidth limiting values. There is a minimum of 512 KB/sec and the throttling
value selected should not cause impaired application response times.
• If possible, provision some extra bandwidth above what is required for daily replication to allow
for "catch-up" mode if replications are paused/stopped due to a link failure.
• Wherever possible do a proof of concept before implementing into production.
88 D2D Systems