Instruction Manual
21
Set up a remote connection
Before a remote connection can be established, the following conditions must be true:
•
The Daemon is installed and running on a host computer connected to the
Drive Enclosure
•
The user interface is installed and running on a remote host computer.
•
A TCP/IP connection can be established between the Daemon and the user
interface. The Daemon listens for connections on TCP port 51115.
Do not
change this port number.
1. In the
Status
window, select
Change Connection
from the
File
menu.
2. Enter the hostname or IP address of the PC hosting the Daemon. Click
OK
. The User
Interface will establish the requested connection and will display the information
gathered by the remote Daemon in the
Status
window.
Configuring SAFE Volume Rebuild Storage Policy
A rebuild is initiated to restore data redundancy for a SAFE volume that has entered a
vulnerable state. In a vulnerable state, one of the two mirrored disks goes offline or is
inaccessible. Although the SAFE volume remains available during the rebuild process,
the volume is susceptible to data loss through damage of the remaining disk until data
redundancy is restored through a rebuild. Host access takes precedence over the rebuild
process. If continuing to use the SAFE volume during the rebuild, the rebuild process will
take a longer time to complete.
Please note that the Rebuild feature also applies to other SAFE policies such as SAFE
and BIG, and SAFE and FAST.
What happens during a rebuild?
The rebuild process restores data redundancy by first utilizing space allocated for a Hot
Spare. In case Hot Spare space does not exist or has already been rebuilt, the SteelVine
processor rebuilds to empty space on a hard disk, other than the one containing
vulnerable data. Following a rebuild, it is not necessary to designate space to a Hot
Spare for a subsequent rebuild to occur.
With
Automatic Rebuild
and
Immediate Rebuild
options selected, the Daemon
automatically initiates an immediate rebuild. If the end-user wants the Daemon to delay
the rebuild until after the first write to the SAFE volume, select the
Rebuild Only If
Needed
option. The latter setup allows temporary removal of a hard disk drive without
requiring a rebuild. To minimize the possibility of data loss, the rebuild process should be
set up to start immediately. With Manual Rebuild selected, the end-user decides when to
initiate rebuild following a rebuild prompt. Unless the SiI 4726 Manager and the Drive
