HP LeftHand P4000 Virtual SAN Appliance Software - Manual (Page 56)

continues operating normally. To use Link Aggregation Dynamic Mode, your switch must
support 802.3ad.
CAUTION: Link Aggregation Dynamic Mode requires plugging both NICs into the same
switch. This bonding method does not protect against switch failure.
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Adaptive Load Balancing (ALB). The logical interface balances data transmissions through both
NICs to enhance the functionality of the server and the network. Adaptive Load Balancing
automatically incorporates fault tolerance features as well.
Best practices
•
HP recommends bonding network interfaces for performance and failover. The best bond to
use depends on your network and SAN configuration.
•
Adaptive Load Balancing is the recommended bonding method, as it combines the benefits
of the increased transmission rates of 802.3ad with the network redundancy of Active-Passive.
Adaptive Load Balancing does not require additional switch configurations.
•
Verify and, if necessary, change the Speed, Duplex, Frame Size, and Flow Control settings
for both interfaces that you plan to bond.
•
Link Aggregation Dynamic Mode does not protect against switch failure, because both NICs
must be plugged into the same switch. Link Aggregation Dynamic Mode provides bandwidth
gains, because data is transferred over both NICs simultaneously. For Link Aggregation
Dynamic Mode, both NICs must be plugged into the same switch, and that switch must be
LACP-capable, and both support and be configured for 802.3ad aggregation.
•
For Active-Passive, plug the two NICs on the storage system into separate switches. While
Link Aggregation Dynamic Mode will only survive a port failure, Active-Passive will survive a
switch failure.
Bonding with 10 GbE interfaces
In storage systems with both 1 GbE and 10 GbE interfaces, users see four Ethernet interfaces listed
in the CMC TCP/IP Network tab window. These four interfaces can be bonded a number of ways.
Note that not all the bond configurations which are supported by the HP P4000 SAN are supported
with 10 GbE NICs.
Supported bonds with 10 GbE
The P4000 SAN Solution with 10 GbE NICs installed and configured supports these bond types.
•
Adaptive Load Balancing (ALB) bond with the two 10 GbE Ethernet NICs
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Active-Passive bond with two 10 GbE Ethernet NICs
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Active-Passive bond with 1 GbE NIC and 10 GbE NIC
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Link Aggregation Dynamic Mode (802.3ad) bond with two 10 GbE Ethernet NICs
Unsupported bonds with 10 GbE
The P4000 SAN Solution with 10 GbE NICs installed and configured does not support these bond
types.
•
Bonding two bonds
•
ALB bond with 1 GbE NIC and 10 GbE NIC
•
Link Aggregation Dynamic Mode bond with 1 GbE NIC and 10 GbE NIC
56 Managing the network