Download Server Installation and Administration

NETAVIS Observer 4.6 Server Installation and Administration (October 2015)
system as image partition. Since this command configures one disk at a time only, run it for each
disk added to the server.
9.24 [24] Configure replaced disk
When a hard disk breaks it must be replaced by a new one and configured with this command. You
can replace broken system disks and also image disks. Please refer also to 7 Dealing with broken disks
and unbootable servers on page 28 for a general description of the topic.
Please note: The replacement disk can be of different type and size than the original disk. Just make
sure that it has enough space for your needs. If you are replacing a disk that contains the Observer
system software and also image storage, please consider that the Observer system software needs
app. 20GB space.
Follow these steps to replace a broken disk:
1. Find out, which disk(s) is/are broken by running the command 9.25 [25] Show unusable disks on
page 51.
2. Power off the server and replace the broken disks by new ones.
3. Boot the server.
4. Run this command [24] for each replaced disk.
This command will partitioning the new disk, make a proper file system on it and in case the
broken disk was part of a software RAID, also repair the software RAID data. It will also reset the
disks to normal state for full operation (which is equivalent to running 9.4 [4] Reset image disks to
normal state on page 36).
9.25 [25] Show unusable disks
If Observer is not able to write to a disk after several retries it will mark the disk as unusable. Then the
disk will no longer be written to.
In a system with several disks, this command helps you to identify the broken disk(s). It lists all broken
disks and shows their device name, the manufacturer, the type of the disk and the serial number.
To replace the disk refer to 7 Dealing with broken disks and unbootable servers on page 28 and 9.24 [24]
Configure replaced disk on page 51.
9.26 [26] Configure time service
Press ENTER if you have no available ntp time server and just want to take the local time. If you
configured another Observer server ,to be a time server then use its IP address here. You can refer to
http://www.pool.ntp.org for a list of available ntp time servers for your region. Choose one of the
servers and enter its IP address here (we need the IP address and not its name).
If you selected above that this server is a timeserver, you can use a timeserver on the Internet to ensure
a synchronization with the world. If you do not do that your server's internal clock will be used instead.
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