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AIX - HDLM Path Management alongside native MPIO
Hi all,
A customer of mine is using AIX 6.1 connected to HDS VSP as primary storage. Thus, they are using HDLM (Hitach Dynamic Link Manager) for path management.
Due to performance issues, they are considering an additional, new all-flash solution (VMAX, VNX or XtremIO [1]) for the demanding workload. My question is, whether native MPIO or PP could be used alongside the exisitng HDLM devices on these AIX hosts?
[1] My preferred solution would be XIO - as soon as it has AIX support - with native MPIO.
Thanks,
Patrik
Ken.Whitehead
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June 19th, 2015 08:00
Hello Patrik,
I would recommend PP as the load balancing is more intelligent than that of MPIO.
According to the release notes for PP 5.7 page 15.
Note: PowerPath can coexist with third-party path management software such as Hitachi Dynamic Link Manager (HDLM), IBM Subsystem Device Driver (SDD), HP StorageWorks Secure Path or HP StorageWorks AutoPath XP Virtual Array; however, PowerPath cannot co-manage devices with third-party path management software. It is possible to have these packages installed on the host alongside PowerPath but you must unmanage the appropriate device class in PowerPath in order to have devices managed by these third-party products.
I hope this answers your question.
Ken