Installation guide

situation exist, do NOT attempt to use this procedure while the system is
on-line.
Note
Make sure that no two ISEs have the same DSSI ID number.
If this upgrade is to be followed by the installation of another Sx72
storage enclosure, a magazine tape subsystem, or both, the host system
must be brought down according to the system documentation.
B.1 Securing the Array for the Upgrade
Once the host systems have been correctly brought down, perform the following
steps:
1. Take each ISE installed in the Sx300 storage array off-line.
a. For all Sx72 storage enclosures, press all operator control panel (OCP)
Ready buttons to their out position.
b. For all magazine tape subsystems, press the Load/Unload button. Wait
until the cartridge is returned to the magazine and the In-Use light
emitting diode (LED) is extinguished.
2. For all Sx72 storage enclosures, press all drive dc power switches to their
out position.
3. For all Sx72 storage enclosures and magazine tape subsystems, turn the ac
power switches at the rear of each to their 0 or off position.
4. At the rear of the array, turn the power controller circuit breaker off.
B.2 Installing the RF72 Disk ISE into an Sx72–HK Storage
Enclosure
This section describes the steps to install two RF72 disk ISEs into an Sx72–HK
storage enclosure.
WARNING
Do not disconnect or disturb the existing DSSI cables and terminators
on the present Sx72 storage enclosures, magazine tape subsystems, or
on the Sx300 storage array I/O panel.
Customer data corruption could result.
B–2 Installing an Sx72–UK Upgrade Kit