HP APA vs LAN Monitor mode of HP APA

[Kelvin Yu]

Hi,

Would like to hear some experiences regarding HP APA vs LAN Monitor mode of HP APA on a HP 9000 rp7410 running Sybase database only? Which solution is more suitable for a machine dedicated for running databases only?

Any suggestions or experiences? Thanks.

Best regards,
Kelvin

[Mel Burslan]

together with not being an APA expert, chosing the APA mode depends on your purpose. Are you trying to provide a backup interface with the same IP in the case one goes down or are your intentions is to pump more data coming from the network into your system. I can not tell you which one is which without referring to manuals but I think the monitor mode is there to privde redundancy whereas the APA as it self is there to establish a larger data pipe.

hope this helps even if a bit.

[cxtwo]

Hello,

It really depends what you are looking for out of the product...

If you want to increase bandwidth of your network connection, and increase resilience, go for APA

If you want to increase resilience only, then go for LM

The advantage with LM is that no setup is required on the switch side, though if you going to two seperate switches, they must be connected and the ports in the same VLAN - i.e. the two+ network cards must be able to reach each other so they can monitor their availability.

With APA, one switch must be used for each load balancing aggregate, and the switch ports must be setup appropriately. Therefore, if you have two NICs on the server, then you would still have a single point of failure in the switch.

Ideally, you would have 4+ cards in the server, with two APA load balancing aggregates, with LM between those two aggregates for failover...

Hope this helps..