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Basic Troubleshooting : Dell PowerVault 220S and 221S Systems Service Manual
Drive(s) not seen during the host boot
If any of these events occur, perform the following diagnostic steps:
1. Is the green AC status LED indicator on the power supply(s) illuminated? (See
No. See
"Troubleshooting a Power
Yes. Go to step 2.
2. Are the following system components updated with the latest firmware and device drivers?
Enclosure EMM
Hard-disk drives
Host bus adapter or PERC
No. Download the latest firmware and/or drivers from the Dell Support website at support.dell.com.
Yes. Go to step 3.
3. Is the amber over-temperature LED on the front of the system illuminated? (See
No. Go to step 4.
Yes. One or more temperature sensors are in the warning range. Check environmental conditions (high ambient
temperatures, ventilation blockage, etc.) and cooling modules for failures. Replace failed cooling modules (see
a Cooling
Module"). For more information, see
4. Is the amber fault indicator on the back of the power supply illuminated? (See
No. Go to step 5.
Yes. A power supply has failed. Replace the failed power supply (see
information, see
"Troubleshooting a Power
5. Is the amber fault indicator for either cooling module blower illuminated? (See
No. Go to step 6.
Yes. One of the cooling module blowers has failed. Replace the failed module (see
more information, see
6. Is the amber fault indicator on an EMM illuminated? (See
No. Go to step 7.
Yes. An EMM has failed. Replace the EMM (see
7. Is the power indicator on the split-bus module illuminated? (See
Yes. Go to step 8.
No. The split-bus module has failed. Replace the split-bus module (see
8. Are the pins on the SCSI cable damaged or is the cable between the host and the storage system disconnected?
No. Go to step 9.
Yes. Secure or replace the cable.
9. Replace the SCSI backplane board. See
Troubleshooting a Cooling Module
The cooling-module LED fault indicators are located in the upper-right corner of each power supply (see
fault indicator is illuminated or your array management software issues a blower-related error message, replace the cooling
module (see
"Replacing a Cooling
CAUTION:
A power supply and cooling module can be removed from a powered-on system for a maximum
period of five minutes. Beyond that time, the system begins to overheat, and at a critical temperature, shuts
file:///C|/Users/rishi_sood/Desktop/220s/en/sm/basics.htm[3/7/2013 12:09:14 PM]
Supply."
"Troubleshooting a Cooling
Supply."
"Troubleshooting a Cooling
"Removing and Installing an EMM or SCSI Terminator
"Replacing the SCSI
Module").
Module."
"Replacing the Power
Module."
Figure 5
for location.)
Figure 5
for location.)
"Removing and Installing a Split-Bus
Backplane."
Figure 8
for location.)
Figure 2
for location.)
Figure 8
for location.)
Supply"). For more
Figure 8
for location.)
"Replacing a Cooling
Module"). For
Card").
Figure
"Replacing
Module").
8). If a blower