Sun Microsystems 880 SunVTS dpmtest fails on dual-loop internal storage array (BugID 4487855), Wrong packet error seen by loopback subtest in dpmtest (Bug ID 4493252), prtdiag reports fan failures as ENABLED with a speed of 0 (BugID 4431194)

22 Sun Fire 880 Server Product Notes • December 2001
SunVTS dpmtest fails on dual-loop internal
storage array (BugID 4487855)
If you use SunVTS 4.4 software on a Sun Fire 880 system that includes a Sun
StorEdge PCI Dual Fibre Channel Host Adapter card to control Loop B of the
internal storage array,the SunVTS dpmtest will fail. This test failure results from a
problem in the SunVTS diagnostic code and should not be interpreted as a problem
with the server or its internal storage array.
Note – Patch 111854-01or later fixes this issue. See “Required And Recommended
Software Patches” on page 3.
Wrong packet error seen by loopback subtest in
dpmtest (Bug ID 4493252)
On Sun Fire 880 systems running SunVTS 4.4 and executing the dpmtest
concurrently on both fibre and I2C interfaces, a rare race condition exists in which
commands from each side may arrive at the backplane essentially simultaneously
and the response from one may overwrite part of the other,causing a false error
message in Sun VTS. The error message will be similar to the following message:
VTSID 6021 dpmtest.do_fibre_loopbacks.ERROR ses0:Sent loopback
packet 0x8B on ses0 but received packet 0x0 Probable_Cause(s):
(...)
This condition is self-correcting, and will not occur in rapid succession except in a
true failure situation. Therefore,if this message is seen in isolation, or with at least
10 minutes separation from any other occurrence of the same message, it can be
safely disregarded.
Note – For further information about this issue, see the SunSolve Online web site.
prtdiag reports fan failures as ENABLED with a
speed of 0 (BugID 4431194)
On Sun Fire 880 systems running the Solaris 8 7/01 or 8 10/01 operating
environment, the Solaris prtdiag command will sometimes report a failed fan as
being ENABLED. This situation can arise when a fan tray assembly has failed and
there is no redundant fan tray assembly for the system to activate. In this case, the
fan tray with the faulty fan remains ENABLED (it continues to receive power) so
that the other fan in the fan tray can continue to operate. The ENABLED status
should not be interpreted as an OK status. It simply indicates that the fan tray is