NetApp DiskShelf14mk2 FC, Руководство по аппаратуре и обслуживанию

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24 Monitoring the ESH2 or ESH4 modules
Hub statistic:
The following table lists and describes the hub statistic
responses.
Hub statistic Description Common values Failure?
Loop up Count Number of times this port saw
the loop come up or transition
to up. Depends on the number of
insertions and removals of disks
and LIPs that occur in the loop. No
Invalid CRC Count Number of times this port saw
a CRC error. Is zero under normal operation.
Removal and addition of disks,
and a reset of the adapter, might
generate some CRC errors. CRC
errors on a port pinpoint the
failure location. Excessive CRC
errors for a continuous time
period cause the ESH2/ESH4
firmware to bypass this port. Yes, if
drive was
bypassed.
Invalid Word Count Number of times this port saw
invalid FC-AL words
transmitted. Is zero under normal operation.
Removal and addition of disks,
and a reset of the adapter, might
generate some word errors. Word
errors on a port pinpoint the
failure location. Excessive word
errors for a continuous time
period causes the ESH2/ESH4
firmware to bypass this port. Yes, if
drive was
bypassed.
Clock Delta The clock delta between this
port in respect to the
ESH2/ESH4 clock and seven
other ports. It is normal for the FC-AL sync
clocks to drift with respect to each
other. This is a signed drift value.
A value exceeding 6,400 PPM
causes the ESH2/ESH4 firmware
to bypass this port. Yes, if
drive was
bypassed.
Insert Count Number of times this port was
inserted into the loop. Depends on the number of
insertions and removals of disks
and LIPs that occur in the loop. No