OnCommand Storage Management Software Discussions

System is using single path HA attached storage

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

3 REPLIES

Re: System is using single path HA attached storage

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

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

Better yet

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

Multipath and Dual-Path Cabling Information

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