HP nPartitions (nPars) manual SAS backplane, Server battery

SAS backplane

The SAS disk backplane supports two small form factor hard disk drives. The backplane supports hot-plugging a single SAS drive at a time. The activity LEDs and drive present LEDs are controlled by a preprogrammed system-on-chip. The system board hosts the SAS controller and supplies 12 V, 5 V, and 3.3 V standby power to the backplane.

The SAS backplane is connected to the system board with a right angle connector. This connector is specifically designed for high-speed differential applications, and supports server speeds exceeding 5 Gigabits per second. Power, sense, and I2C signals are routed through this connector as well as the SAS differential pairs and SGPIO signals.

1.Power off the server blade and remove it from the enclosure (“Preparing the server blade for servicing”).

2.Remove the access panel (“Access panel” (page 106)).

3.Remove the disk drives or disk drive blanks (“Disk drives” (page 107) or “Disk drive blanks” (page 107)).

4.Lift the SAS back plane straight out of the server by the backplane handle.

To replace the component, reverse the removal procedure.

Server battery

If the server blade no longer automatically displays the correct date and time, you might have to replace the battery that provides power to the real-time clock. Under normal use, battery life is 5 to 10 years.

WARNING! The computer contains an internal lithium manganese dioxide, a vanadium pentoxide, or an alkaline battery pack. A risk of fire and burns exists if the battery pack is not properly handled. To reduce the risk of personal injury:

•Do not attempt to recharge the battery.

•Do not expose the battery to temperatures higher than 60°C (140°F).

•Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.

•Replace only with the spare designated for this product.

1.Power off the server and remove it from the enclosure (“Preparing the server blade for servicing”).

114 Removing and replacing components