1Introduction
2.Release the reset switch when the desired number displays. The unit identification number displayed is stored in the EEPROM. The unit identification number does not change even if the storage system is power- cycled (unless this procedure is repeated).
NOTE The power supply does not reset when the unit identification number is changed.
Power Cycling
On an active network, switching the storage system power on or off while the host system is operating may affect server operation. Always make sure it is safe to cycle the power before doing so. Alert network users that the mass storage will be unavailable while the power is off.
For example, if you are using the HP DAC Write Cache, power cycling could result in data loss. When using the Write Cache, use the JetSet utility (provided with HP NetServers) to flush the cache before you cycle power. Wait until the disk drives are idle and the Write Cache (if used) has been flushed before switching off power. This avoids corrupting any data transfer that may be in progress between the host system and a disk.
The status lights on the front of each disk indicate activity. The lights flash when the host system is transferring data. If no lights are flashing, the bus is idle and it is safe to switch off the power.
Continuous Operation
The storage system power should remain on whenever the host system is operating. The disk drives are not harmed by continuous operation; avoid cycling power unnecessarily.
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