Installing WordPress on AWS

Now that we have our AWS infrastructure configured to support a sample WordPress workload (see Part 1 and Part 2 of this series) we can get into installing and configuring WordPress, AWS ElastiCache, and S3 / Glacier backups. Setup NFS Server for WordPress Media Library Our WordPress EC2 instances will be transient – we’ll be using AWS Auto Scaling to spin up and down web server instances as needed.  In a single server setup, WordPress expects a local (ext4) directory (/wp-content) within the web server root directory for storing WordPress content (themes, plugins, media library, images).  … [Read more...]

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...]

Obtaining VMware Guest Disk Free Space for NFS Sizing

I am often asked about sizing storage vis-à-vis how much free space within a guest VMDK eats into the overall size of the volume.  The answer can be drastically whether we are dealing with thick-provisioned VMDK's on FC or iSCSI LUN's, or thin provisioned VMDK's on NFS volumes.  The amount of free space present in guest VMDK's also comes into effect when calculating the impact of dedupe on the volume.  Add in some flexible volumes on NetApp storage and the amount of provisioned storage in the design changes significantly. There are several methods of obtaining the amount of free space in a … [Read more...]