EMC ATMOS Hardware Manual page 38

Symptom
(J) Only 31 to 45 disk drives are
accessible.
15 Drives are unavailable
Drives are only seen under
3 enclosures
(K) No disk drives are
accessible.
All drives are unavailable.
4: Troubleshooting
Probable Cause
Front DAE LCC
Front DAE Power supply
Either DAE Blower module
Cable between DAEs
Either DAE midplane
Server
SAS controller
Recommended Actions
Check to see if the SAS
1
Cable link LED is
illuminated.
Power down the server.
2
Ensure SAS and power
3
cords are fully seated.
Ensure Enclosure
4
Addresses are set
correctly:
(0), (2) Rear DAEs, (1),
(3) Front DAEs
Check both front DAE
5
LCC LEDs; if faulted,
replace LCC.
Check both front Power
6
Supply LEDs; if faulted or
off, replace power
supply(ies)
If DAEs have blower‐only
7
modules, check both front
and rear blowers LEDs; if
faulted, replace blower
module.
Power‐cycle the DAEs.
8
Power‐up the server; if
9
troubles persist, replace
cable and/or DAE as a last
resort.
Power down the server.
1
Ensure SAS and power
2
cords are fully seated.
Power cycle the DAEs.
3
Power up the server. If
4
troubles persist, replace
the server.
Disk 1:60 Configuration 38