Dell PowerVault 221S (SCSI) - Manual (Page 26)

Troubleshooting: Dell PowerVault 220S and 221S Systems Installation and Troubleshooting Guide
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3. Does the bus configuration switch mode match your cabling configuration? For example, if you are operating in split-
bus mode, is the cabling between the host(s) and the storage system appropriate for this mode? (For more information
on cabling configurations, see " Cabling Your System for Joined-Bus, Split-Bus, or Cluster Mode .")
Yes. Go to step 4 .
No. Change either the bus configuration switch mode or cabling between the host and storage system. Then reboot the
storage system and the host.
4. Are the status LED indicators for all the hard drives illuminated?
Yes. End troubleshooting.
No. Go to step 5 .
5. If a hard drive's status indicator is off, reseat the hard drive by removing it from its drive bay and reinstalling it (see
" Removing and Installing Hard Drives "). Is the problem resolved?
Yes. End troubleshooting.
No. Install a new hard drive.
NOTICE: Replacing the hard drive in a non-RAID system will cause all data on that drive to be lost. Only replace the
hard drive when using a supported host adapter card. See your system's readme file for a list of supported cards.
Troubleshooting the System
When the storage system is turned on, the system performs a POST, which checks the system components. During POST, the
indicators for each SCSI hard drive blink briefly, and the front-panel LED indicators are illuminated (see Figure 5-2 ). When
the POST completes, the indicators are illuminated as described in Table 1-3 .
Figure 5-2. Front-Panel LED Indicators