Troubleshooting when the SC101/SC101T Storage Central cannot create a mirror

Prerequisites:

• The SC101/SC101T has two disk drives installed.
• Hard drives are on the compatibility list - SC101 Drive Compatibility List, SC101T Drive Compatibility List.
• For SC101, Hard Drives must be ATA6 or above (Parallel ATA) and configured as “Cable Select” (CS).
• For SC101T, Hard Drives must be serial ATA (SATA)
• The Power LED light must light up solid green.
• The DHCP Server must be present.
• Use a wired PC to configure/modify the SC101/SC101T (see diagram).

NOTE: If you use a drive that was formatted on a PC, the data will not be usable on the SC101SC101T, and may be corrupted, even if you do not explicitly overwrite the PC partitions.

Check LED lights (URL link)

Confirm that there is an Ethernet link, if not, check your Ethernet cable.

Look for the blinking patterns on the green LED to see whether they are correct.

If the green LED flashes 3 times, something is wrong with the DHCP server and the SC101/SC101T cannot obtain an IP address.

Check cables

Confirm that IDE and power cables on the drives are firmly connected.

Confirm that the Ethernet cable is firmly attached. When the SC101/SC101T detects a cable disconnection and reconnection, it will reboot automatically.

Check drive partition

Make sure that you partitioned the drive. Use the UT commands to see a list of all the partitions that you have created.

If you only see the root partition, create a new partition.

You cannot mirror a drive that uses the format of another operating system. The drive must be completely reformatted (destroying all previous data) with the SC101/SC101T file system through the Storage Central Manager Utility (SCM) .

Confirm that the mirrored drive has space to do the mirror. The mirrored drive must have at lest as much partition space as the drive that is it mirroring.

Do the mirroring process through a wired connection, not a wireless one.

No other network users should beconnected to the SC101/SC101T during the mirroring process as this may slow or kill the mirroring process. If the drives are attached or shared on a network, detach and unshare these drives before mirroring. It is normal for the mirroring to take a long time to complete.

n101628.asp June 1, 2006