Currently, I have VMware ESXi 5.1 that runs on two Dell Power Edge 2970 Servers in my corporate office and one Dell Power Edge 2970 in a remote location. These servers run off of hard disks that are inside each server. I believe these disks are SAS 7.2. There are 6 disks in each server. 0 and 1 are a mirrored configuration and I run my backups on the mirror. Disks 2,3,4, and 5 are in a RAID 5 configuration and this is the main datastore in VMware where the machines (Microsoft 2003 server, MySQL, XP....etc) are stored and run from.
I am looking into the possibility of purchasing a SAN, so that I could have some centralized storage, but am not familiar with the technology and am researching all options available. I have attached a report of some metrics that were gathered regarding the performance of my current servers. It would be helpful if I fully understood what this collected data really means. I believe it would help make my decision easier. For instance, I know IOPS are important, but 755.4 at 95%, 1071.3 at 99% and 1315.0 at peak means nothing to me. Is there anyone out there that can break down what this report is telling me? Also, I would welcome advice on what people are using in the real world as far as storage and what hardware is giving good performance in a production environment.
Your advice and assistance in this matter is greatly appreciated!