Symmetric active/active for Mcx (VNX)

I am aware of this feature, and I am not aware of any changes in it since its introduction with VNX2.

And I too would like to know if I have missed any change announcements for it, or whether there is a roadmap for bringing it to pooled LUNs.

Actually I need to know just last update about that feature, I dont need the technical assistance. There is no updated document regarding Simmetric active/active feature (excluding white paper from 2013). So I hope to get answer from EMC staff about that, and is there any update since 2013? For pool LUNs? No? Why?

correct - ALUA for pool based LUNs

for roadmap questions please contact your local EMC or partner sales

Rainer

Looks like there is no any answers from EMC experts, and it means for me that Symmetric active/active for Pool LUNs still doesn't work for them, only for Traditional LUNs (RAID groups based). I will try to find some documents and share them.

Looks like this is the answer:

All VNX arrays (including CLARiiON arrays running FLARE release 26 and later) support
Asymmetric Active/Active, which is commonly and erroneously referred to as 'ALUA'.
Asymmetric LUN Access or ALUA is a SCSI interface [2] that allows description of
Optimized and Non-Optimized paths. The word 'asymmetric' in ALUA is misleading, and perhaps unfortunate. ALUA mode is simply the mechanism the SCSI protocol uses to communicate which paths should be used. Symmetric Active/Active uses ALUA messaging to signify that all paths are optimized. Asymmetric Active/Active uses ALUA to signify that some paths are optimized and some are non-optimized.

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MCx supports Symmetric Active/Active, but it also supports Asymmetric Active/Active. Symmetric Active/Active is supported for Classic LUNs. A Classic LUN is a LUN that is not created within a Pool.

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Note: This paper uses 'Active/Active' term to indicate Symmetric Active/Active, and Asymmetric Active/Active for the other ALUA-based access. The VNX2 does not support Active/Active for Pool LUNs (both thick and thin). They default to Asymmetric Active/Active.

taken from:

https://support.emc.com/docu48786_White-Paper:-VNX2-MCx---Multicore-Everything.pdf?language=en_US

March 2015

A bit wrong:

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All VNX arrays (including CLARiiON arrays running FLARE release 26 and later) support
Asymmetric Active/Active, which is commonly and erroneously referred to as 'ALUA'.

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page 25 on White paper document

correct - I thought that was clear