Storage Basics – Part IX: Alternate IOPS Formula

It's been a long time since I published an article in my Storage Basics series - the series has been some of the top content on my site to date.  I sat for a beta version of the VMware Certified Advanced Professional - Desktop Design (VCAP-DTD) test today and was reminded by the test of a post I had in waiting about an alternate way to calculate IOPS (hint hint - memorize these formulas).  I have several more articles sitting in draft form, but a new job, crazy kids, home improvement projects, and a wife with chronic cerebral spinal fluid (CSF) leaks (it sounds bad - and it is - but look on … [Read more...]

Storage Basics – Part VIII – The Difference in Consumer vs. Enterprise Class Disks and Storage Arrays; or ‘Why is the SAN you are proposing so darn expensive?’

As both an IT Manager and storage & virtualization consultant, I have shepherded SMB's through SAN purchases in support of VMware environments.  This may not hold true for the bigger IT shops, but as I take these smaller companies through the SAN purchase process, a common set of questions is often asked - Do we really need a SAN, and why is it so darn expensive!?!? I quickly learned that my (cheeky) answer "because it's enterprise class, baby" just didn't cut it.  So how do you move beyond "I can get a 2TB hard drive for $100 at Best Buy, why are you selling me on 300GB hard drives for … [Read more...]