3 Storage system concepts
Controllers
HP P6000 EVA storage systems contain a redundant pair of disk array controllers that manage storage system operation and serve as the physical interface to the SAN. All host I/O and management commands from HP P6000 Command View are processed by the controller pair. More information is available in HP P6000 EVA user guides. See related information.
Controller type identification
HP P6000 controller identification format is HSVxxx. The following table shows the relationship between controller types and storage system models.
Controller | Controller |
|
Hardware Type | Software Type | HP P6000 EVA Models |
HSV100 | VCS | EVA 3000 |
HSV110 | VCS | EVA 5000 |
HSV200 | XCS | EVA 4000, EVA 4100, EVA 6000 and EVA 6100 |
HSV210 | XCS | EVA 8000 and EVA 8100 |
HSV300 | XCS | EVA 4400 |
XCS | EVA 4400 with embedded Fibre Channel switch | |
HSV340 | XCS | P6300 EVA, P6350 EVA |
HSV360 | XCS | P6500 EVA, P6550 EVA |
HSV400 | XCS | EVA 6400 |
HSV450 | XCS | EVA 8400 |
Controller power-on behavior
When the management module on an HP P6000 EVA storage system is powered on or restarted, the default behavior is to not power on the controllers. This behavior is set with the Controller Power Option and can be changed so that the controllers are automatically powered on. See Setting controller power on behavior. The default, the Controller Power Option is disabled.
When the Controller Power Option is disabled, and power to the storage system is turned on from the rack power distribution unit, only the disk enclosures boot up. When the option is enabled, the controllers also boot up, making the entire storage system ready for use.
Management module considerations
•When the Controller Power Option is enabled, and the management module is removed from its slot and reinserted to reset power or restart the management module from the Control Panel, only the controllers automatically boot up after a full shutdown. In this case, you must ensure that the disk enclosures are powered on first; otherwise, the controller boot up process may be interrupted.
•When the reset button on an HP P6000 management module is pressed, the Controller Power Option is reset to its default setting of disabled.
•Before performing a hot swap of an HP P6000 management module, ensure that the controllers are powered on. Hot swap of a management module can only occur when the controllers are powered on and accessible by the HP P6000 Control Panel.
18 Storage system concepts