HP StoreOnce D2D4324 HP D2D25xx, 41xx and 43xx Backup System user guide (EH985 - Page 79

Bandwidth limiting, Table 24 General Settings Replication, IMPORTANT

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Table 24 General Settings (Replication) (continued) send these. These notifications are in addition to a standard notification email sent whenever a mapping first becomes unsynchronized and another when synchronization is achieved. Configure Replication Ports Replication ports should only be changed if replication is blocked by a router on the WAN. They must be the same on both source and target appliances. If in doubt, do NOT change them. IMPORTANT: If replication needs to take place through a firewall, the network administrator will need to open (TCP) ports 9387 (Command protocol) and 9388 (Data protocol) to allow the replication traffic to pass to and from the HP StoreOnce Backup Systems. If necessary and the StoreOnce Backup Systems conflict with another device on the network, these ports can be changed from the defaults in the General Settings. Bandwidth limiting This tab allows you to apply a general bandwidth setting and to configure bandwidth limiting windows. Bandwidth limiting can be used to avoid saturating the WAN with low bandwidth replication, thus freeing up bandwidth for other processes and applications that you may have running. A minimum of 2Mbps per concurrent job is recommended. At least 512kbps per concurrent job is required for reliable operation. A bandwidth usage calculator is provided to generate a recommended bandwidth limit from WAN speed information and percentage usage information, which is provided in the Maximum WAN Usage and WAN Speed fields. These limits apply to all outbound replication jobs from this local appliance. 1. Display the Bandwidth Limiting tab. 2. Check the General Limiting Enabled box. You can now work out the recommended general bandwidth limit, which is a simple calculation of WAN Speed x Maximum % WAN Usage. A bandwidth limit calculator is provided on this page to work out limit values, if required. 3. Click Edit to edit the Bandwidth Limiting Windows. You can configure two windows for each day. Be sure to check the appropriate Apply First/Second Restriction checkbox(es). This ensures the times that have been specified are Local Appliance (Replication) 79

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Table 24 General Settings (Replication)
(continued)
send these. These notifications are in addition to a standard notification email sent whenever
a mapping first becomes unsynchronized and another when synchronization is achieved.
Replication ports should only be changed if replication is blocked by a router on the WAN.
They must be the same on both source and target appliances. If in doubt, do
NOT
change
them.
Configure Replication
Ports
IMPORTANT:
If replication needs to take place through a firewall, the network administrator will
need to open (TCP) ports 9387 (Command protocol) and 9388 (Data protocol) to allow the
replication traffic to pass to and from the HP StoreOnce Backup Systems. If necessary and the
StoreOnce Backup Systems conflict with another device on the network, these ports can be changed
from the defaults in the General Settings.
Bandwidth limiting
This tab allows you to apply a general bandwidth setting and to configure bandwidth limiting
windows.
Bandwidth limiting can be used to avoid saturating the WAN with low bandwidth replication, thus
freeing up bandwidth for other processes and applications that you may have running. A minimum
of 2Mbps per concurrent job is recommended. At least 512kbps per concurrent job is required
for reliable operation. A bandwidth usage calculator is provided to generate a recommended
bandwidth limit from WAN speed information and percentage usage information, which is provided
in the
Maximum WAN Usage
and
WAN Speed
fields. These limits apply to all outbound replication
jobs from this local appliance.
1.
Display the Bandwidth Limiting tab.
2.
Check the
General Limiting Enabled
box. You can now work out the recommended general
bandwidth limit, which is a simple calculation of WAN Speed x Maximum % WAN Usage.
A bandwidth limit calculator is provided on this page to work out limit values, if required.
3.
Click
Edit
to edit the Bandwidth Limiting Windows.
You can configure two windows for each day. Be sure to check the appropriate Apply
First/Second Restriction checkbox(es). This ensures the times that have been specified are
Local Appliance (Replication)
79