Hitachi HF-W2000 Instruction Manual page 303

10. SOFTWARE RAID1
(2) If you replace the HDD while the power to the equipment is turn on
< NOTICE >
You need to have administrator privileges to execute step 3. Log on to the
computer using an administrator account and click OFFLINE. If "User Account
Control" (UAC) is enabled, in a confirmation message, click Yes. The User Account
Control window is displayed. Then click Continue.
Note that if "User Account Control" (UAC) is disabled and a user without
administrator privileges clicks the OFFLINE button, the HDD is not disconnected.
1. Back up the data.
2. Terminate all running applications.
3. Double-click the hardware status icon on the notification area of the taskbar.
The Hardware status window appears. In the Hardware status window, under Drive
bay1, click OFFLINE to set the HDD into the offline mode.
Confirm that the HDD1 status lamp is on. It may take a few tens of seconds for the
HDD1 status lamp to turn on.
Hardware status window
10-24
Hardware status icon