Tag Archives: VMAX

Useful EMC VMAX CLI commands


Over the years I collected a number of useful CLI commands to control the DMX / VMAX machines I worked with. Even though nowadays Unisphere for VMAX is a useful tool, nothing really beats the command line!
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How to list Host LUN ids in VMAX Masking Views


Creating tdevs and masking them to hosts (storage groups in a masking view) is relatively easy in the Unisphere for VMAX interface, but what if you add a few tdevs of exactly the same size and you want to make sure that the VMware administrator uses the right LUN for each VMFS he’s going to create? One way to make sure he knows which LUN corresponds with what tdev is the Host LUN id. To list the host LUN ids

symaccess -sid 1234 show view mv_some-maskingview-name

or (a bit more verbose)

symaccess -sid 1234 list view -name mv_some-maskingview-name -detail

The second command shows each initiator group nested within other initiator groups as well.

Both generate a table with the following headers:

Sym                                                            Host
Dev     Dir:Port    Physical    Device    Name    Lun    Attr    Cap(MB)

The column under “Host Lun” shows the Host LUN ids.

Symmetrix offers a new kind of MAXimum Virtualisation (VMAX)


The mother of all arrays has just been given an upgrade!

Well ok, maybe EMC did not produce the mother, since it’s fair to say IBM 3390 disk subsystem came first, but since the first Symmetrix came out in the early 90s with as much as a dozen or two disks, EMC has come a long way. They set the standard when it came to enterprise storage arrays. And it wasn’t just size that mattered back then: performance was and is still the number one objective for the Symms. After the “dark ages” (roughly before the year 2000) things got serious with the DMX series in 2003. The number of disks went up and loads of cache had to make sure that performance was guaranteed. DMX1, DMX2, DMX3/4 were quite a success.

And then there was VMAX

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EMC World 2013, the final countdown has started!

The countdown has started

Just 3 weeks and a few days to go and it’s EMC World again! Time to meet my old and new friends and finally getting some rays. the one thing I’ve been missing the last few weeks it’s the sun and I guess most Europeans agree with me. Don’t know what it’s like in other parts of the world, but I certainly need more heat than what we’re having now.

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VMAX Cloud Edition – are we in for a rain shower or a hurricane?


Just now at the VMware Partner Exchange 2013 (AKA PEX ’13) in Las Vegas, EMC announced the VMAX Cloud Edition for the Enterprise and midmarket. It’s an exciting new product that meets the needs of service providers to meet more of the customers needs. Now that’s a lot of “needs”, right?

But why should we even pay attention to the service provider side of the story?

The latest IDC Research Notes provides insight into this Market Momentum.

It is no surprise that Conventional IT spending is down, Private Cloud adoption is growing the fastest at 23%.

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