User manual

Chapter 3: Qube 3 Services
56 Cobalt Qube 3 User Manual
Hardware failure
If one of the hard drives fails, the Qube 3 can function with one hard drive, but
the server can no longer provide disk mirroring. To restore RAID service, you
must shut down the Qube 3 and replace the failed hard drive. For more
information on replacing a hard drive, see Appendix C, “Upgrading the Qube 3”.
For a failed drive, Active Monitor indicates that the Drive A or Drive B has failed.
Drive A is the drive next to the side wall of the chassis; Drive B is on the inside.
The drive letters are stamped on the slots of the drive bay for the hard drives.
If RAID fails on the Qube 3, the system indicates the non-RAID status in two
ways:
• An email is sent to the Qube 3 Administrator.
• In the Administration section, under Active Monitor > Status, the RAID
circle changes to red.
Once you replace a failed drive on a Qube 3 and reboot the server, the system
detects the new hard drive. It then automatically begins to synchronize the new
hard drive to the existing hard drive so that the server will be able to provide disk
mirroring.
Internet access through high-speed
serial port
The Qube 3 is equipped with a high-speed serial port to which you can connect
an external modem or an Integrated Services Digital Network (ISDN) terminal
adapter. If you have (or can obtain) a standard point-to-point protocol (PPP)
dial-up account with an Internet Service Provider (ISP), a phone line and a
modem, your Qube 3 can provide Internet access for your network—no router is
required.
For more information, see “Configuration for an analog modem or ISDN” on
page 169.
✍
Note: During the synchronization process, the Qube 3 cannot
provide disk mirroring but it can still serve requests.