DaveWentzel.com All Things Data
SAN and Disk Configuration Notes
This is just random thoughts on disk subsystems, SANs, and SQL. See the attached ppt (right click and choose Save As) for some of this information based on a seminar I gave.
What is a SAN?
At its simplest it is a collection of FibreChannel switches operating together as a fabric allowing servers and storage devices to communicate with each other using block protocols. Sounds simple...and it should be. But as we add many switches, with storage from different vendors, with different protocols, we realize that SANs have gotten complex...similar to how servers have gotten complex. This complexity is a management nightmare, which has led to the advent of Virtualized SANs.
|General Disk Topics||Storage Networking Technologies||SAN Topics||Other Items|
|Solid State Drives|
|Storage Virtualization||Peformance||Useful Links|
When dealing with storage performance your two main concerns are bandwidth and latency.
Here are some random performance thoughts for a database wired to a SAN:
|Latency and IOPs|
|SAN Performance Troubleshooting||http://storageperformance.org|
|Thin Provisioned Storage|
|SAN and Storage AntiPatterns|