Chapter 3 Managing Disk Volumes 61
▼ To Perform a Mirrored Disk Hot-Plug Operation
1. Verify which hard drive corresponds with which logical device name and physical
device name.
See “Physical Disk Slot Numbers, Physical Device Names, and Logical Device
Names” on page 57.
Caution – Ensure that the hard drive OK-to-Remove LED is lit, indicating that the
hard drive is offline. If the hard drive is still online, you risk removing the disk
during a read/write operation, which could result in data loss.
2. To confirm a failed disk, type the following command:
For example:
This example indicates that the disk mirror has degraded due to a failure in disk
c1t2d0.
Note – The logical device names might appear differently on your system,
depending on the number and type of add-on disk controllers installed.
3. Remove the hard drive, as described in the Netra 440 Server Service Manual.
There is no need to issue a software command to bring the drive offline when the
drive has failed and the OK-to-Remove LED is lit.
4. Install a new hard drive, as described in the Netra 440 Server Service Manual.
The RAID utility automatically restores the data to the disk.
# raidctl
# raidctl
RAID RAID RAID Disk
Volume Status Disk Status
----------------------------------------
c1t1d0 DEGRADED c1t1d0 OK
c1t2d0 DEGRADED