Fibre Channel Loop Switches; Loop Switch - HP StorageWorks 6100 - Enterprise Virtual Array User Manual

Reporting group numbers
The reporting group number (RGN) range is 0000 through 4099, decimal.
• 0000 is reserved for enclosures that are not part of any reporting group.
• 0001 through 0015 are RGNs reserved for use by the EMU.
• 0016 through 4095 are valid RGNs.
• 4096 through 4099 are invalid RGNs.
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 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.
shows the 30-10022-01 loop switch with the system and port indicators.
76 Enterprise Virtual Array hardware components
Figure 22