Document fins/I0611-1
FIN #: I0611-1
SYNOPSIS: Some E10K systems are being shipped to customers with all unipack
boot disks for each domain plugged into the same AC power
DATE: Sep/29/00
KEYWORDS: Some E10K systems are being shipped to customers with all unipack
boot disks for each domain plugged into the same AC power
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- Sun Proprietary/Confidential: Internal Use Only -
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FIELD INFORMATION NOTICE
(For Authorized Distribution by SunService)
SYNOPSIS: Some E10K systems are being shipped to customers with all
unipack boot disks for each domain plugged into the same AC power
sequencer, creating a single point of failure for the domain.
TOP FIN/FCO REPORT: Yes
PRODUCT_REFERENCE: Ultra E10K boot device
PRODUCT CATEGORY: Server / Power
PRODUCTS AFFECTED:
Mkt_ID Platform Model Description Serial Number
------ -------- ----- ----------- -------------
Systems Affected
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- E10000 ALL Ultra Enterprise 10000 -
X-Options Affected
------------------
- - - - -
PART NUMBERS AFFECTED:
Part Number Description Model
----------- ----------- -----
- - -
REFERENCES:
805-2916-10 Ultra Enterprise 10000 System Hardware
and Software Installation Guide
PROBLEM DESCRIPTION:
If an AC power sequencer fails in an E10000 with two unipacks as boot
devices for the same domain and powered by the same AC power sequencer,
the domain will crash and will remain unbootable until the power sequencer
is replaced or the power cable on one of the unipack boot devices is
moved to another power sequencer.
Even though E10000 systems are shipped with two AC power sequencers
installed, both the primary and alternate boot devices for each domain
can be configured to receive power from the same sequencer, creating
a single point of failure.
E10000 systems which are ordered with unipacks for boot devices must be
configured redundantly in terms of power. The primary and alternate
boot devices should receive power from two different sources (i.e. two
different AC power sequencers). The SSE installing the system should
insure that this is done at install time.
Since there are 256 different possible combinations of unipack to
board connections, Sun Manufacturing is not able to make the
power connections recommended above during system assembly.
IMPLEMENTATION:
---
| | MANDATORY (Fully Pro-Active)
---
---
| | CONTROLLED PRO-ACTIVE (per Sun Geo Plan)
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| X | REACTIVE (As Required)
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CORRECTIVE ACTION:
An authorized Enterprise Field Service Representative may avoid the
above mentioned problems by following the recommendations as shown
below.
When SSE's install a new E10k and set up domains, visually inspect the
power connections from the 2 unipack boot devices for each domain to
insure that the primary boot device and the secondary boot device are
not plugged into the same AC power sequencer. If both unipacks are
connected to the same power sequencer, the power cord from one of the
units should be moved to the second power sequencer, eliminating
the single point of failure.
COMMENTS:
Note: Even though not recommended, the E10k can be ordered in
configurations that have only one AC Power Sequencer installed.
In this case the boot devices (Unipacks, D1000, RSM) are plugged
into the same AC power sequencer. If the E10K is shipped with
two AC power sequencer and the factory configured domains are
connected to redundant UniPacks, these are always powered by
different AC power sequencer. In case of a D1000, the redundant
D1000 power supplies are connected to different AC power
sequencers.
If domains on the E10K are reconfigured in the field, make sure
that two UniPacks for the same domain are not connected to the
same power source.
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Implementation Footnote:
i) In case of MANDATORY FINs, Enterprise Services will attempt to
contact all affected customers to recommend implementation of
the FIN.
ii) For CONTROLLED PROACTIVE FINs, Enterprise Services mission critical
support teams will recommend implementation of the FIN (to their
respective accounts), at the convenience of the customer.
iii) For REACTIVE FINs, Enterprise Services will implement the FIN as the
need arises.
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browser as follows:
SunWeb Access:
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* From there, select the appropriate link to query or browse the FIN and
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SunSolve Online Access:
-----------------------
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* From there, select the appropriate link to browse the FIN or FCO index.
Supporting Documents:
---------------------
* Supporting documents for FIN/FCOs can be found on Edist. Edist can be
accessed internally at the following URL: http://edist.corp/.
* From there, follow the hyperlink path of "Enterprise Services Documenta-
tion" and click on "FIN & FCO attachments", then choose the
appropriate
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Internet Access:
----------------
* Access the top level URL of https://infoserver.Sun.COM
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General:
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