Disk Configurations - EMC Atmos Hardware Manual

Troubleshooting

Disk Configurations

Table 6
Symptom
(G) Only 1 to 14 disk drives are
accessible.
• Drive is unavailable.
• Drive is reporting faulted or is
missing.
(H) No disk drives accessible from a
server
All 15 Drives are unavailable
82 EMC Atmos Hardware Guide
Disk Configuration Troubleshooting
Probable Cause
Disk drive(s)
DAE LCC
DAE power supply
DAE blower module
SAS cable
DAE midplane
SAS controller
Recommended Actions
1. If one drive is missing or faulty, physically
locate the bad drive and replace it.
Note: To locate drives, look for Amber Fault
LEDs. If a DAE fault LED is on blinking, the
fault is in the DAE behind the blinking
enclosure. If a DAE fault LED is on solid, the
failure is in that enclosure.
2. If more than one drive is faulted or not
visible, power down the server and
power-cycle the DAEs. After DAEs are
back up, power on the server.
3. If multiple disks still remain faulted or
missing, physically locate disks and
replace.
1. Check to see if the SAS Cable link LED
is illuminated.
2. Power down the server.
3. Ensure SAS and power cords are fully
seated.
4. Check DAE LCC LED status; if faulted,
replace LCC.
5. Check Power Supply LED status; if
faulted or off, replace power supply.
6. If DAEs have blower-only modules, check
blower LED status; if faulted, replace
blower module.
7. Power-cycle the DAE.
8. Power-up the server. If troubles persist,
replace cable and/or DAE as a last
resort.