Multipathing in AIX

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Operating Systems AIX Multipathing in AIX
# 1  
Old 08-04-2011
Question Multipathing in AIX


I know the concept of multipathing, but would like to know how to configure multipathing in AIX.

or software/driver is by default present in AIX??????

How to find out wheather multipathing is configured in AIX?????


# 2  
Old 08-04-2011
lspath -l hdisk0

# 3  
Old 08-04-2011
if you want to use mpio - this is part of AIX. If you use HDS or EMC storage than the drivers come from the vendor. I think IBM storage brings its own multipath software too (not sure - I seem to end up always in EMC companies Smilie )

If your storage is presented via vscsi from the vio servers, than AIX will use MPIO pretty much by default but you will have to set up the failover and path settings like queuedepth and priority ....

# 4  
Old 08-08-2011
With Hitachi's SAN, you can use their HDLM software or you can just install the fileset named "devices.fcp.disk.Hitachi.modular.mpio.rte" and use IBM's built in MPIO software. The fileset allows your AIX box to correctly identify the disks as Hitachi disks. Without it, the disks are identified as something like "FC Other Disk".
# 5  
Old 08-24-2011

There is now a built in MPIO software in AIX 7.0. It will automatically detect SAN devices from EMC but if your using EMC there is a software from them called POWERPATH.

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