Storage

Posts on hard drives, SAN technologies, RAID, SSD and similar. The most recent articles are on the top.
 

The write penalty of RAID 5

Why each write causes at least four disk IOs and decreases write performance in RAID 5

How RAID 5 actually works

How the parity calculations are done with RAID level 5

Windows Performance Monitor and Disk usage

How to monitor disk performance in Windows Server using the perfmon tool.

Storage performance: IOPS, latency and throughput

Explains the factors involved in the performance of mechanical hard disks.