topic Re: System is using single path HA attached storage in Active IQ Unified Manager Discussions

System is using single path HA attached storage

dstrebel — Thu, 05 Jun 2025 07:30:35 GMT

New to Netapp and dont know what this error is "System is using single path HA attached storage" any thoughts?

Re: System is using single path HA attached storage

danielpr — Thu, 19 Feb 2009 18:41:28 GMT

You need to check if the disk shelf are in multi path. Check the Cluster cable connectivity.


Thanks
Daniel

Re: System is using single path HA attached storage

BrendonHiggins — Thu, 19 Feb 2009 20:23:18 GMT

A DS14mk2 or DS14mk4 have two of what is know as a electronically switched hub (ESH) module in them. They are labled A and B. Each esh has an in and an out port. If you connect 1 filer to the A port and the other filer to the B port, both filers can see the disks and you have an active / active cluster. So if a cable is pulled out or a HBA laser dies, the second filer can take over.

In a HA environment. The 1st filer is conected to the A port in but also the B port out. The is reversed on the 2nd node B in and A out. This is HA in an active / active enviroment.

If you just have a single file put one cable to the A and the other to the B.

You can see if it is working

storage show disk -p

Have a look at page 16 & 17

http://media.netapp.com/documents/tr-3437.pdf

Hope this help

Brendon

Re: System is using single path HA attached storage

BrendonHiggins — Thu, 19 Feb 2009 20:41:13 GMT

Better yet

http://now.netapp.com/NOW/knowledge/docs/hardware/filer/215-03304_A0.pdf

Multipath and Dual-Path Cabling Information