Setting up iSCSI with VMware ESXi and the FlashArray

I’ve been with Pure Storage for about ten months (time flies!) and a noticeable trend I’ve seen in the past six or so months is in the number of customers who are deciding to use iSCSI as their storage protocol of choice. This is increasingly common in greenfield environments where they don’t want to invest in a Fibre Channel infrastructure. I’ve helped quite a few set this up in VMware environments so I thought I would put a post together on configuring ESXi software iSCSI with the Pure Storage FlashArray (I have yet to see a hardware iSCSI setup).

Before I begin, I highly recommend reading the following two documents from VMware:

http://www.vmware.com/files/pdf/iSCSI_design_deploy.pdf

http://www.vmware.com/files/pdf/techpaper/vmware-multipathing-configuration-software-iSCSI-port-binding.pdf

They are not long and provide very good insight into the how/what/why of iSCSI on VMware. Some of the images are a bit old, but the underlying concepts have not changed. Continue reading Setting up iSCSI with VMware ESXi and the FlashArray

FlashArray XCOPY Data Reduction Reporting Enhancement

Recently the Purity Operating Environment 4.1.1 release  came out with quite a few enhancements. Many of these were for replication, certain new GUI features and the new vSphere Web Client Plugin is included. What I wanted to talk about here is a space reporting enhancement that was made concerning VAAI XCOPY (Full Copy). First some history…

First off a quick refresher on XCOPY. XCOPY is a VAAI feature that provides for offloading virtual disk copying/migration inside of one array. So operations like Storage vMotion, Cloning or Deploy from Template. Telling an array to move something from location A to location B is much faster than having ESXi issue tons of reads and writes over the SAN and it also therefore reduces CPU overhead on the ESXi host and reduces traffic on the SAN. Faster cloning/migration and less overhead–yay! This lets ESXi focus on what it does best: manage and run virtual machines while letting the array do what it does best: manage and move around data. Continue reading FlashArray XCOPY Data Reduction Reporting Enhancement