Archive for the ‘Uncategorized’ Category

A new opportunity

August 6, 2013 1 comment

Regular readers have probably noticed that this blog has been dark for a few months. Life has been busy having been married about 10 months now, and along with that a new career opportunity popped up that was too good to turn down. I have updated my “About” page to fully disclose my new role and employer, which I believe is important to do as everybody has bias in some way, shape, or form, whether we like to admit it or not. What I love about my new role (with CDW) is the opportunity to have significant exposure to a large array of technologies and manufacturers, which allows me to “keep it real” so to speak when talking with customers. That being said, there are technologies that I don’t get much exposure to. Additionally, though I go thru training and maintain accreditation/certification in a wide variety of storage technologies, like anyone I can tend to gravitate to what I know best, which dates back to my years as a storage administrator/architect.

So, with that being said, let the blogging resume, albeit at what will probably be a somewhat slower pace as life just keeps getting busier and time keeps flying faster.

Categories: Uncategorized

SRM for VNXe is here (NFS only)!

February 5, 2013 Leave a comment

SRM for VNXe is here (NFS only)!

FINALLY!   VNXe finally supports VMware Site Recovery Manager (SRM)!  Since I’ve been critical of this lack of support in the past, I wanted to make sure I posted this link to add visibility.   Note:  this is technically a “preview” and is not 100% certified by VMware yet, therefore it is not downloadable thru the official site for VMware SRA’s.    

Categories: Uncategorized Tags:

VMFS-5 Heap Size

January 9, 2013 Leave a comment

Nick and I troubleshooted this issue for a client back in December. He beat me to the punch on blogging about it 🙂 This was the first time I had heard of heap size, and I hope it’s the last!

Categories: EMC, Uncategorized, VMware

Wedding planning and blogging do not mix

September 19, 2012 2 comments

Just a quick note to update my readers – the Hoosier Storage Guy is dark until early Oct when I return from my honeymoon. Wedding planning has consumed my life for the past several months, hence no posts since July, and I’m on a much needed break in Hawaii right now.

Categories: Uncategorized

EMC VNX OE 32 (i.e. Flare 32) is finally here!

July 17, 2012 2 comments

It sure would’ve been nice to see this sooner, but better late than never.  Finally, we get to see the really good stuff that has been in the works for sometime and takes a great product and makes it even better.     This is a key update for any existing EMC VNX customers (though I recommend waiting 1-2 quarters before upgrading) and any new VNX customers.   

The key updates include:

  • Support for mixed RAID types in a storage pool
  • A new Flash 1st auto-tiering policy
  • New RAID templates to support better efficiency – such as changing RAID6 protection scheme from 6+2 to 14+2.
  • In-family data-in-place upgrades – bringing back the capability that existed within Clariion to essentially do a head-swap and grow to the next model. 
  • Windows Branch Cache support for CIFS/SMB file shares
  • Load-balancing and re-balancing within a storage tier
  • VNX Snapshots now provides write-in-place pointer-based snapshots that in their initial release will support Block LUNs and require pool-based LUNs. 


You can read more here:


Categories: Uncategorized

March 27, 2012 Leave a comment

Great article here for VNXe customers to get more detailed performance stats


The latest Operating Environment upgrades have already brought some improvements to the statistics that are shown through the Unisphere GUI. The first VNXe OE that I worked with was showing only CPU statistics. Then along with update 2.1.0 Network Activity and Volume Activity statistics came available. I was still hoping to get some more statistics. IOps and latency graphs would have been nice additions. So I did some digging and found out that there is actually lots of statistics parameters that VNXe gathers but those are just stored in the database, maybe for support purposes.

Where is the data stored?

When logging in to the VNXe via SSH using service account and listing the content of the folder /EMC/backend/perf_stats you will see that there are several db-files in that folder.

Now when opening the file with notepad it is quite clear what kind of databases those are:

How to read…

View original post 551 more words

Categories: Uncategorized

March 18, 2012 Leave a comment

Great article here on the Aussie Storage Blog on why NL-SAS > SATA.

Aussie Storage Blog

Here are two common statement I often hear from clients:

  1. I don’t just want SAS drives, I also want SATA drives.  SATA drives are cheaper than SAS drives.
  2. Nearline SAS drives are just SATA drives with some sort of converter on them.

So is this right?  Is this the actual situation?

First up, if your storage uses a SAS based controller with a SAS backplane, then normally you can plug SAS drives into that enclosure, or you can plug SATA drives into that enclosure.    This is great because when you plug SATA drives into a SAS backplane, you can actually send SCSI commands to the drive plus you can send native SATA commands t00 (which is  handy when you are writing software for RAID array drivers).

But (and this is a big but) what we do know is that equivalent (size and RPM) SAS drives perform better than SATA drives…

View original post 725 more words

Categories: Uncategorized