Skip to main content

Breaking Down an NAA ID / World Wide Name

At least once a week in my career as a storage engineer I have a conversation that involves a systems admin asking me to add space to a SAN (fiber channel attached) based storage object by referring to it how they see it.  This could be the name of a data store in VMware, saying the “E-drive”, or any number of other descriptions of a storage object which are meaningless to me.  When I ask for more detail I am often given the world wide name of the device, as to them it looks like a pretty unique identifier for the storage they are talking about.  Before I long I log into the system myself and get it all sorted out but I wanted to see if there was a way I could make a quick and easy translation of the world wide name they give me so that it […]

Read More

Nanobox Hybrid Review and PAR Analysis

Introduction As mentioned in my previous post outlining my new reef tank build, the light was one of the things I stressed out over the most.  At the most basic level I knew I wanted to keep SPS primarily, and that I also wanted a hybrid LED/T-5 fixture.  I also knew I would be using a canopy above the tank so whatever light I chose would need to fit inside the canopy, which forced me to exclude most 36″ length fixtures as I did not want to have to squeeze something under the canopy and have it just barely fit.  Coming back into the hobby after over 5 years of not keeping up with the latest technologies forced me to do a lot of research regarding LED technology because when I was last involved in the hobby LED fixtures were not commonly being used.  After a lot of internal debate […]

Read More

Reef Aquarium 3.0

Background It has been over 5 years since I last kept a reef aquarium, and as the title implies this will be the 3rd stab at it.  I want to mention, though, that the first two were not abandoned out of failure or frustration.  My first saltwater tank was a 30 gallon freshwater conversion that I had in an apartment.  When we decided to move, I set up a 65-gallon reef ready tank as its replacement so that I could move the existing livestock from one tank to the other.  Since the majority of the livestock didn’t survive the move, I consider them two different builds.  The 65-gallon was up for about a year when our house mates suddenly, and without warning, moved out, and we were forced to move again.  At that point since we had no idea what our future living situation was going to be, rather than […]

Read More

NetApp LUN Alignment

This is just a quick post about how to check and manually set the LUN alignment offset on the NetApp Platform. Traditionally you can only do this using the wizards in the VSC Console but in some cases you may want to create a LUN with a specific offset without using the wizard which forces you to migrate VM’s onto the newly created LUN at the time of creation. For me this was especially useful when attempting to fix alignment issues on Linux VM’s which use LVM and are not correctly identified as being mis-aligned in the VSC tool. Identifying the LUN offset The following commands will allow you to see the offset of a LUN or manually set the offset if you are trying to manually overcome disk alignment issues. If a LUN has a manually set offset (or a custom offset defined by the use of the VMWare […]

Read More

Linux for the HTPC

I consider myself an avid linux user. I suppose I should qualify that by saying I love linux, and I enjoy using linux but I am by no means any sort of expert on the platform. With that said, I try to use it wherever I can being a big fan of the FOSS community and enjoying the ability to make something exactly how I want it. My home has always made heavy use of HTPC’s (Home Theater PC’s) and historically I have just taken whatever old hardware I had lying around and used it for this purpose. Up until about a month ago my two HTPC’s were both old Mac’s I had stopped using: A 2009 Mac Mini and a 2006 Macbook Pro. As such I left them running their native OSX and everything worked fine. I started having issues with the older Macbook Pro recently, though, where it […]

Read More