These instructions describe how to install and configure a stack of four chassis (hosts and disk expansion) onto the stacker unit base. Because of the decision- making required, you should read the instructions completely before assembling the stack. The installation consists of:
The stacker unit contains the following:
Note - The following part numbers are for inventory of items received only and cannot be used to order parts.
To begin the installation, unpack the power distribution unit and stacker base. Place the equipment in the location where the stack will be installed, then proceed as directed in the sections that follow.
Prior to assembly, decide what the stacker unit configuration should be. This will determine the chassis stacking order as well as chassis cabling to the power distribution outlets.
A power distribution unit is factory installed in the stacker unit base. You use the power configuration switch on the rear panel of the power distribution unit to configure a stack as shown in Table 1. See Figure 5 for switch location.
You use additional power distribution unit controls to select host type as well as master/slave relationships within a stack when master/slave power is selected (see Figure 6 for master/slave selections).
Table 1 Power Configurations
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Switch Position Description Example/chassis stacking order -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Unswitched Six unswitched outlets. Four unrelated
chassis in a stack;
use any order.
Master*/Slave** One or more host chassis (as master) controls CPU system
power to its disk expansion chassis (as slaves) controls power to 3
disk expansion
or, one master host controls a second host as a units; typically
slave. place CPU on top
for easy power
access.
Remote One stack (as master) controls a second stack (as One master in the
slave). first stack controls
power to its own
disk expansion
units as well as
those in the slaved
stack.
* A host system that controls power to its connected disk expansion systems or to a second host.
** A disk expansion system or a host chassis that can be powered on and off through its master. Slaves may have more
than one master - dual masters enable you to control power to slaves with either master. If a slave has two masters,
it will be powered up if either or both masters are powered up. In the case of two connected stacks, the master(s)
within the master stack controls power to the slave stack.
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Once you have decided on a power configuration, the stack(s) are assembled as described in the section "Stacking the chassis" on page 4", subject to the restrictions detailed in the following section.
The following restrictions apply to all configurations:
Assembly of the stacker unit(s) is detailed in the following sections:
Before beginning the assembly of your stacker unit decide on a power and master/slave configuration as detailed in the section "Deciding on the Configuration" on page 2, this will determine the order in which the chassis are physically stacked and cabled. For example, you will prefer to put the masters on top of the slaves.
Once the chassis stacking order is determined:
Instructions are provided in the installation manuals shipped with each host and disk expansion chassis.
Use a flat blade screwdriver to tighten each front caster locking screw.
Ensure that the locking module cable management bracket stabilizers are positioned to the rear of the power distribution unit as shown in Figure 1.
The locking module captive screws can be utilized as handles.
Figure 2 Removing Chassis Cover Plugs
Note - The feet on SPARCserver 1000 and disk expansion chassis are grooved to accommodate the locking module metal plate when it is returned to its fully retracted position. SPARCstation 10 chassis feet are not grooved and thus this chassis must be positioned alongside a stack.
Make sure it is positioned with the cable management stabilizers facing the rear of the power distribution unit as in Figure 3.
Figure 4 Installing Cable Management Brackets
Each possible selection is detailed in the steps that follow. See Figure 5 for switch location.
Figure 5 Power Sequencer Rear Panel
The choices are SPARCserver 1000 (SS1000 position) or SPARCstation 10 (SS10 position).
See Figure 6 for switch location and an explanation of the selections.
The choices are SPARCserver 1000 (SS1000 position) or SPARCstation 10 (SS10 position).
Note - Power distribution unit outlets for the domestic version are the 208/240V (NEMA 6-15R)type. If your existing chassis power cords are the 110V type replace them with the four power cables that came in your installation kit. For the international version, replace the chassis power cords to be used in the stack with those provided in your installation kit.
Chassis cabling to the power distribution unit outlets can be accomplished in any order since all power distribution unit outlets are unswitched.
Cable the chassis(s) to the outlets of the power distribution unit as indicated for your selection. Master chassis(s) are plugged into power distribution outlets A1 and/or A2 and slave chassis(s) are plugged into power distribution outlets B1 through B4 as required. Refer to Figure 6, which depicts the four possible master/slave selections.
No particular order of chassis cabling is required.
Master chassis(s) are plugged into power distribution outlets A1 and/or A2 and slave chassis(s) are plugged into power distribution outlets B1 through B4 as required. Refer to Figure 6, which depicts the four possible master/slave selections.
Use tie wraps to bundle the cables, if needed. Wrap excess cabling for the bottom chassis around the upper cable management brackets if required.
Note - The two cable side covers are not interchangeable, refer to Figure 7 to determine whether a cover is for the right or left hand side.
When the cover is properly located, a post located on the extension to the stacker unit base fits through a hole in the cover shelf.
Repeat the instructions in step 1 as for the right cover.
Two ball studs located on the inside of the top cover will snap into place and lock the top and side covers in position.
Figure 7 Installing Cable Covers
This completes the installation, when fully assembled your unit should resemble the completed stack as depicted in Figure 8.
Figure 8 Completed Stacker Unit (Front View)
The power indicator light on the top rear of the power distribution unit should light up. The hosts and disks can now be powered on.
The slaved chassis will not receive power until the next step is accomplished.
Caution -
Refer to the installation manual for the recommended method of bringing down the hosts and disks before removing power. Once the hosts and disks are synched, turn off the AC power switch on the masters.
Note - The stacker unit cannot be powered up from the emergency power off switch, to power up after using this switch, follow the "Powering On" sequence.
The power distribution unit has an emergency power off button located on the front panel that powers off the entire stack in case of an emergency (see Figure 8).
