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Query on San Storage

 
sayansaha
Occasional Contributor

Query on San Storage

We have Metrocluster cluster with CA-EVA and brocade san director.
As well as MC-XP (xp12000) in same brocade san director.
DC SAN switch 1 is direct ISL with DR SAN switch 1 and
DC SAN switch 2 is direct ISL with DR SAN swicth 2. Trunking is enable for both.
We have direct connection between DC and DR san switches, connected with a dark cabling.

Now we are geting error messege in server for CA-EVA and suggesstion came from hp to set some setting in brocade switch as per below....

****
To set this parameter, the switch needs to be disabled by using the switchdisable command. (Host I/O connectivity will be affected.) To enable the switch use the switchenable command.

Typing aptpolicy 1 enables Port Based Routing . This is required for Continuous Access EVA. Typing aptpolicy followed by return shows the current policy set in the switch: *******


Now my query is this aptpolicy change is going to make any impact on exiting CA-XP ?

Please help me on this....Since our set up in under production so I am not able to take any changes before clarify.


Thanks

Sayan

 

 

P.S. This thread has been moved from Community Feedback & Suggestions to Storage Area Networks (SAN) (Enterprise) - HP Forum Moderator

1 REPLY 1
Johan Guldmyr
Honored Contributor

Re: Query on San Storage

Hi,

 

make sure you actually use exchange based routing, it's a switch setting so check on all switches.

 

After changing from exchange-based to port-based the path that frames take over the SAN will be different(static and less bandwidth may be usable) after you change to port-based routing. If this is important to your CA-XP traffic I do not know.

 

Newer versions of EVA (0953xxxx XCS) support exchange-based routing when using HP SCSI-FCP as the data replication protocol (see HP EVA continuous access implementation guide). But if you have an xp12000 perhaps you have an older EVA as well.