Addendum for
Replacing an Ultra SCSI RAID BA370 Enclosure EMU
This addendum only applies to the following documents:
Compaq UltraSCSI RAID Enclosure (DS-BA370-Series) User's Guide
EKBA370UG. C02 (September 1998)
Compaq StorageWorks HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
EKHSZ80SV. A01 (December 1998)
Compaq StorageWorks HSZ70 Array Controller HSOF Version 7.3 Service Manual
EKHSZ70SV. B01 (January 1999)
Compaq StorageWorks HSG80 Array Controller ACS Version 8.5 Maintenance and Service Guide
EKHSG84SV. C01 (February 2000)
Compaq StorageWorks HSG60/HSG80 Array Controller ACS Version 8.5 Maintenance and Service Guide
EKHSG84SV. D01 (June 2000)
An addendum is comprised of two parts: pen-and-ink changes and page changes:
s "Pen-And-Ink Changes" section provides instructions for locating specific text and to either
(1) delete this text, (2) replace this text with new text, or (3) to add new text at a specific location.
s "Page Additions" section identifies the number of pages to add at a specific place in the document
and a recommendation on how to attach the replacement pages.
IMPORTANT: If the changes within this addendum are not incorporated into the specified documents and then
used, potential problems might arise from using obsolete information.
2001 Compaq Computer Corporation. EKEMURPAA. A01
Printed in the U.S.A. March 2001
Compaq, Compaq logo, StorageWorks Registered U.S. Patent and Trademark Office. All other product
names mentioned herein may be trademarks or registered trademarks of their respective companies.
The information in this document is subject to change without notice.
ii Addendum for Replacing an Ultra SCSI RAID BA370 Enclosure EMU
Pen-And-Ink Changes
For each document, incorporate the required change listed in Table 1.
Table 1 Pen-And-Ink Changes
For Document... On page... Under Section... Make This Change...
EK-BA370-UG. C02 328 through 330 Replacing an EMU Delete the entire section.
EK-HSZ80-SV. A01 250 through 251 Replacing an EMU Delete the entire section.
EK-HSZ70-SV. B01 339 through 340 Replacing an EMU Delete the entire section.
EK-HSG84-SV. C01 337 through 338 Replacing an EMU Delete the entire section.
EK-HSG84-SV. D01 339 through 340 Replacing an EMU Delete the entire section.
Page Additions
For all documents, insert the following sheet where the "Replacing an EMU" section was
deleted.
NOTE: Consider securing this sheet into the document by using tape on the inside edge.
Addendum for Replacing an Ultra SCSI RAID BA370 Enclosure EMU Addendum Replacement Page 1
Replacing an EMU
The EMU is hot-pluggable and may be replaced with the subsystem operating. Use the
following steps in "Removing an EMU" and "Installing an EMU" to replace the EMU in a
BA370 enclosure.
Removing an EMU
1. If expansion enclosures exist, disconnect any EMU-EMU communication cables
connected to the EMU being replaced.
After a brief delay, the EMU sounds a constant audible alarm tone in any enclosure
that becomes disconnected from the master EMU.
NOTE: Cables are reattached to the same connectors on the replacement EMU.
2. Pull the extractor latches outward and remove the EMU from the enclosure.
WARNING: Once the EMU is removed from the enclosure, do not attempt to replace
any other modules except disks. An enclosure failure may result.
NOTE: When the EMU is extracted from the enclosure, the enclosure PVA sounds a beeping
audible alarm tone.
Installing an EMU
1. Verify that the replacement EMU is a model DSBA35XEB.
2. Align the replacement EMU in the top, left-hand bay of the controller area (see
Figure 1, ) and insert the EMU.
Addendum Replacement Page 2
1
2
CXO5754B
Figure 1. EMU and PVA bay locations in a BA370 enclosure
3. Extend the extractor latches outward and push EMU into the bay until the extractor
latches engage the enclosure, then rotate the extractors latches inward to seat and
secure the EMU.
NOTE: The enclosure PVA audible alarm stops beeping.
4. If expansion enclosures exist, reconnect the EMU-EMU communication cables to the
replacement EMU.
All EMU constant audible alarm tones stop immediately, indicating reconnection to
the master EMU.
NOTE: For expansion configurations, use BN26M series cables (see Table 3-1 in the Compaq
UltraSCSI RAID Enclosure (BA370-Series) User Guide) to create the EMU-EMU communications
bus connections as illustrated in Figure 2.
CXO5820A
Figure 2. EMU-EMU communications bus connections for BA370 subsystem expansion configurations
| DS-BA370-Se
EK-BA370-UG
EK-HSG84-SV
EK-HSZ70-SV
EK-HSZ80-SV
|
