Figure 2 Fully Connected Controller Failover
2.3.4
Firmware
Each EqualLogic PS Series array runs a core operating system in firmware that provides all of the PS
Series features and functionality. The firmware version is defined using a version number and will be
updated from time to time as new features are added or for general maintenance improvements.
The firmware version number takes the following form: "X.Y.Z":
"X" is used to identify the "major" release number. This changes when there are very significant
changes in the features and functionality.
"Y" is the "minor" release number. This changes as new minor features or improvements in
existing features are made for a given major release.
"Z" denotes maintenance releases. This changes whenever a maintenance release level is
released to resolve any identified technical or usability issues.
Dell EqualLogic Configuration Guide v11.3
7