User's Manual

The reporting group numbers are displayed on the EMU alphanumeric display as a pair of two-digit
displays. These two displays are identified as rH and rL.
• Valid rH displays are in the range 00 through 40, and represent the high-order (most significant)
two digits of the RGN.
• Valid rL displays are in the range 00 through 99, and represent the low-order (least significant)
two digits of the RGN.
To view a reporting group number:
1. Press and release the bottom push-button until the alphanumeric display is rG.
2. To display the two most significant digits of the Reporting Group Number, press and hold the
top pushbutton unit the display is rH.
3. Press and release the top push-button to display the first two digits of the RGN.
4. Press and release the top push-button until the alphanumeric display is rH.
5. Press and hold the top push-button until the alphanumeric display is rL.
6. Press and release the top push-button to display the last two digits of the Reporting Group
Number.
7. To exit the display, press and release the bottom push-button until the alphanumeric display
is rG.
Fibre Channel loop switches
The loop switches act as a central point of interconnection and establish a fault-tolerant physical
loop topology between the controllers and the disk enclosures. The loop switches are required in
any configuration with more than four disk enclosures. The EVA8000/8100 uses four loop switches
and the EVA6000/6100 uses two switches to connect the drive enclosures to the controller pair.
The loop switches provide the following features:
• 2.125-Gbps operating speed
• Twelve ports
• Half-width, 1U size
• System and port status indicators
• Universal power supply that operates between 100 to 250 VAC and 50 to 60 Hz
NOTE: Each bezel covers two FC loop switches in a space of 1U.
The EVA8000 uses four loop switches to connect all of the drive enclosures to the controller pair
using FC cables. The EVA 6000 includes two loop switches. Each switch acts as a central point
of interconnection and establishes a fault-tolerant physical loop topology. The EVA6100/8100
use the 30-10022-01 loop switch only.
The half-rack form factor switch is controlled by firmware loaded into the on-board flash memory.
The switch is designed as a central interconnect following the ANSI FC-AL standard. Disk enclosures
are connected to the switch through Small Form-factor Pluggable (SFP) transceivers and cables.
The storage system uses one of the following loop switches:
• 30-10022-01 loop switch–used with 2 Gb and 4 Gb controllers (requires XCS 5.110 or later)
• 30-10010-02 loop switch–used with 2 Gb and 4Gb controllers
30-10022-01 loop switch
The 30-10022-01 loop switch contains both system indicators and port indicators. The system
indicators indicate the status of the switch, and the port indicators provide status of a specific port.
Figure 17 (page 39) shows the 30-10022-01 loop switch with the system and port indicators.
38 Enterprise Virtual Array hardware components