1 Introduction
10
Hot-Swap Disk Module Care and Relocation
Handle disk modules carefully. Disk modules are more susceptible to shock,
vibration and electro-static discharge when they are not in the cabinet. Also, do
not touch the SCSI edge connector pins when a disk module is out of the cabinet.
The oils on your skin could weaken the contact.
Once the storage system has been configured and installed, a disk module should
not be moved from one hot-swap shelf to another shelf. Relocating a disk module
changes the SCSI address of that disk. If the SCSI address is changed, the
storage system is not able to read the information on that disk and data will be
lost.
Each disk module shelf is numbered. It is recommended that you mark each
module with its shelf number prior to installation. If a disk module fails, remove
the failed module and place a new module in the same shelf. Placing a
replacement module in a different shelf or relocating a disk module will result in
the loss of data.
Spin Up
The storage system must be powered up and the drives on the storage system
allowed to “spin up” to speed before the HP NetServer is powered on. The drive
activity light is on while the drive spins up. The light is off when the drive has
spun up and there is no read/write activity. If the HP NetServer is powered on
before the storage system is powered on and the drives have spun up, the host
will not recognize the storage system devices.
NOTE If the SCSI addresses of the hot-swap shelves are set to 1-3 or 9-11,
they are programmed to delay startup. Wait at least two minutes
after the storage systems are powered up before powering up the
host system if any SCSI address is set to 1-3 or 9-11.
Using an Uninterruptible Power Supply
It is recommended that you operate your storage system on an uninterruptible
power supply (UPS). If you do, refer to the documentation included with the UPS
for complete instructions on connecting your storage system. The recommended
UPS budget for a fully loaded storage system is 600VA.
