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HP DL360p Gen8 8 SFF - wrong drive addressing

 
EWolfgang
Occasional Visitor

HP DL360p Gen8 8 SFF - wrong drive addressing

Hi,

we have four DL 360p Gen8 + the embeded P420i (FW 8.00) + the 8 SFF drive backplane (667868-001). Each filled with 8 original HP HDDs. Running OS is LefthandOS  

At three of them the drive addressing is OK. Running HPSSACLI we get the follwowing Port-Box-Bay information:

1I:1:1 (port 1I:box 1:bay 1, SAS, 600 GB, OK)
1I:1:2 (port 1I:box 1:bay 2, SAS, 600 GB, OK)
1I:1:3 (port 1I:box 1:bay 3, SAS, 600 GB, OK)
1I:1:4 (port 1I:box 1:bay 4, SAS, 600 GB, OK)
2I:1:5 (port 2I:box 1:bay 5, SAS, 600 GB, OK)
2I:1:6 (port 2I:box 1:bay 6, SAS, 600 GB, OK)
2I:1:7 (port 2I:box 1:bay 7, SAS, 600 GB, OK)
2I:1:8 (port 2I:box 1:bay 8, SAS, 600 GB, OK)

But on one of them the addressing seems to be wrong, as we get the following:

1I:1:1 (port 1I:box 1:bay 1, SAS, 600 GB, OK)
1I:1:2 (port 1I:box 1:bay 2, SAS, 600 GB, OK)
1I:1:3 (port 1I:box 1:bay 3, SAS, 600 GB, OK)
1I:1:4 (port 1I:box 1:bay 4, SAS, 600 GB, OK)
2I:0:5 (port 2I:box 0:bay 5, SAS, 600 GB, OK)
2I:0:6 (port 2I:box 0:bay 6, SAS, 600 GB, OK)
2I:0:7 (port 2I:box 0:bay 7, SAS, 600 GB, OK)
2I:0:8 (port 2I:box 0:bay 8, SAS, 600 GB, OK)

This addressing causes big problems... For some reason the drives 5-8 seem to be connected to "box 0". In the Smart Array Administrator I can see that drives 1-4 are correctly shown as connected to Drive Enclosure Port 1l Box 1. But drives 5-8 are connected to the "embedded P420i"... While on all other servers drives 5-8 are also connected to Enclosure Port 2l Box1...

I already tried to exchange cables, installing another P420, and downgrading controller FW and iLO FW. But the issue seems to persist. Unfortunately the three other servers are used in production, so I cannot swap the backplanes.

My guess is the backplane is the reason for this. But maybe somebody has another idea what could be the reason for this or how to solve this problem?