Network Card User Manual

MAP 2323: SSA Intermittent Link Error
This MAP helps you to isolate FRUs that are causing an intermittent SSA link problem.
You are here because you have an SRN from the series 21xxx through 29xxx, or you
have SRN 33xxx.
If you are not familiar with the SSA link, read the section Chapter 2, “Introducing SSA
Loops” on page 7 before using this MAP. Chapter 2, “Introducing SSA Loops” explains
SSA links, strings, and loops.
Attention: Unless the using system needs to be switched off for some other reason,
do not switch off the using system when servicing an SSA loop. Power cables and
external SSA cables can be disconnected while that system is running.
1.
a. Run the Link Verification service aid to the SSA adapter for which this error has
been logged (see “Link Verification Service Aid” on page 383). A list of pdisks,
similar to the example given here, is displayed:
LINK VERIFICATION 802386
SSA Link Verification for:
nunu:ssa0 00-04 IBM SSA 160 SerialRAID Adapter (
To Set or Reset Identify, move cursor onto selection, then press <Enter>.
Physical Serial# Adapter Port
A1 A2 B1 B2 Status
[TOP]
nunu:pdisk1 AC7AA09A 0 3 Good
nunu:pdisk2 AC7AA2D6 1 2 Good
nunu:pdisk3 AC7AA0BD 2 1 Good
nunu:pdisk4 AC7AA0B1 3 0 Good
F3=Cancel F10=Exit
Note: On the Link Verification screen, each adapter port is identified by the
number of its related connector on the adapter card:
v Adapter port 0 is identified as A1
v Adapter port 1 is identified as A2
v Adapter port 2 is identified as B1
v Adapter port 3 is identified as B2
SRNs 21xx through 29xxx and SRN 33xxx include the adapter port
number (0–3).
b. Go to step 2.
2. (from step 1)
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