Novell ZENWORKS LINUX MANAGEMENT 7.3 IR2, Руководство администратора

Страница: 439 / 684

Using Preboot Services 439
no
vd
ocx
(e
n)
7 Ja
nua
ry 201
0
The session name is any string that uniquely identifies this multicast session from other
multicast sessions that might be in progress on the network. Use the same session name on each
of the participating devices in this multicast session. You can specify any multicast session,
including one that originates from the imaging server (as long as you specify the session name
used by the imaging server).
8 Select a Session role option:
Master: Select this option if this is the session master.
Client: Select this option if this is a participating device.
9 (Optional) If you chose Master in Step 8 , click Specify additional options , click Next , then fill
in the fields:
Compression level: Specify the compression level you want to use for this multicast session:
Š
None: No data compression is used. Data is sent immediately across the network to
participating devices. You might use this option if the master device has a slow CPU; the
amount of time to compress the data is eliminated and the data is immediately sent across
the network. However, this option creates more network traffic than if you selected one of
the other compression levels (
Speed , Balanced , or Size ).
Š Speed: Takes the least amount of time to compress the data before the data is sent across
the network to participating devices. You might use this option if the master device has a
slow CPU; the amount of time to compress the data is reduced before the data is sent
across the network. With this option, however, the multicast session creates more network
traffic than if you selected either the
Balanced or Size compression level.
Š
Balanced: Represents a compromise between data compression and the amount of
network traffic that the multicast session creates.
Š
Size: Takes the most amount of time to compress the data before sending it across the
network to participating devices. You might use this option if the master device has a fast
CPU. Using this option requires the most CPU resources to compress the data but creates
less network traffic to transfer the data to the participating devices.
Automated session: Click Enabled to specify the number of participating devices (clients) that
must register before starting the automated multicast session and to specify the amount of time,
in minutes, that can expire without the number of participating devices to register before
starting the automated multicast session. If you do not click the
Enabled check box, you must
manually start the multicast session.
10
Click Next , then click Start session .
You can cancel the session by clicking Abort session > Yes > OK > Close .
11
At each participating device, when the imaging is done, do the following to boot the device
with the new operating system:
11a At the Linux prompt, type
lilo.s
, then press Enter.
11b Press Ctrl+Alt+Delete.
If the device doesn’t boot to the new operating system (that is, if the Linux prompt is
displayed), enter
lilo.s
again and reboot the device a second time.