Instruction Manual

Condition repo
rt analysis
As described in Appendix B: EMU Generated Condition Reports, condition report analysis involves:
1. Identifying the element.
2. Determining th
e major problem.
3. Defining a ddit
ional problem information.
Viewing the repor ting group feature
Another function of the enclosure address bus is to provide communications within a reporting group. A
Reporting Group (rG) is a n HSV110 controller pair and the associated drive enclosures. The controller
pair automatically assigns a unique (decimal) four-digit Reporting Group Number (RGN) to each EMU on
an FC-AL.
Each of the drive enclosures on a lo op pair are in one reporting group:
• All of the drive enclosures on loop pair 1, both loop 1A and loop 1B, share a unique reporting
group number.
• All of the drive enclosures on loop pair 2, both loop 2 A and loop 2B, share a unique reporting
group number.
Each EMU collects environmental information from the associated enclosure and broadcasts the
information to reporting group members using the enclosure address bus. Information from enclosures
in other reporting groups is ignored.
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 throu
gh 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 t wo-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 digi
ts 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.
Viewingareportinggroupnumber
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 push-button unit the display is rH.
3. Press and release the top push-button to d isplay the first two digits of the RGN.
4. Press and release the top push-button until the alphanumeric display is rH.
5. Press a nd 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.
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Storage system hardware components