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Chapter 15

Upgrading or reinstalling the software

This chapter includes the following topics:

Topic

Upgrading the Nortel SNAS 4050

Performing minor and major release upgrades

Activating the software upgrade package

Reinstalling the software

Before you begin

Reinstalling the software from an external file server

Reinstalling the software from a CD

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The Nortel SNAS 4050 software image is the executable code running on the

Nortel SNAS 4050. A version of the image ships with the Nortel SNAS 4050 and is preinstalled on the device. As new versions of the image are released, you can upgrade the software running on your Nortel SNAS 4050. In some cases, you may need to reinstall the software on the Nortel SNAS 4050 in order to return the device to its factory defaults.

Upgrading the Nortel SNAS 4050

There are two types of upgrades:

• Minor release upgrade: This is typically a bug fix release. All configuration data is retained. To perform a minor upgrade, connect to the Management IP address (MIP) of the cluster you want to upgrade.

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Major release upgrade: This kind of release may contain bug fixes as well as feature enhancements. All configuration data is retained. To perform a major upgrade, connect to the MIP of the cluster you want to upgrade.

Note: When you activate a software upgrade on a Nortel SNAS 4050 device, all the Nortel SNAS 4050 devices in the cluster reboot. All active sessions are lost.

Upgrading the software on your Nortel SNAS 4050 requires the following:

1 Loading the new software upgrade package or install image onto a TFTP/

FTP/SCP/SFTP server on your network.

2 Downloading the new software from the TFTP/FTP/SCP/SFTP server to your

Nortel SNAS 4050.

3 Activating the software on the Nortel SNAS 4050.

Note: Before upgrading, check the accompanying release notes for any specific actions to take for the particular software upgrade package or install image.

Performing minor and major release upgrades

The following description applies to a minor or a major release upgrade.

To upgrade the Nortel SNAS 4050 you will need the following:

• Access to one of your Nortel SNAS 4050 devices through a remote connection (Telnet or SSH), or a console connection.

• The software upgrade package, loaded on a TFTP/FTP/SCP/SFTP server on your network.

• The host name or IP address of the TFTP/FTP/SCP/SFTP server. If you choose to specify the host name, note that the DNS parameters must have been configured. For more information, see

“Configuring DNS servers and settings using the CLI” on page 477

.

• The name of the software upgrade package (upgrade packages are identified by the .pkg file name extension).

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The set of installed Nortel SNAS 4050 devices you are running in a cluster cooperate to give you a single system view. Thus, to perform an upgrade, you only need to connect to the MIP of the cluster. The upgrade will automatically be executed on all the Nortel SNAS 4050 devices in operation at the time of the upgrade. All configuration data is retained.

You can access the MIP by a Telnet or an SSH connection.

Note: Telnet and SSH connections to the Nortel SNAS 4050 are disabled by default, after the initial setup has been performed. For more information about enabling Telnet and SSH connections, see

“Configuring administrative settings using the CLI” on page 483 .

When you have gained access to the Nortel SNAS 4050, use one of the following methods to download the software upgrade package:

•

“Downloading the software image using the CLI” on page 759

•

“Downloading images using the SREM” on page 748

Downloading the software image using the CLI

To download the software upgrade package using the CLI, perform the following steps:

1 Enter the following command at the Main menu prompt. Then select whether to download the software upgrade package from a TFTP/FTP/SCP/SFTP server.

For some TFTP servers, files larger than 16 MB may cause the upgrade to fail.

>> Main# boot/software/download

Select protocol (tftp/ftp/scp/sftp) [tftp]:ftp

2 Enter the host name or IP address of the server.

Enter hostname or IP address of server: <server host name or IP>

3 Enter the file name of the software upgrade package to download.

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If needed, the file name can be prefixed with a search path to the directory on the TFTP/FTP/SCP/SFTP server.

If you are using anonymous mode when downloading the software package from an FTP server, the following string is used as the password (for logging purposes): admin@hostname/IP.isd.

Enter filename on server: <filename.pkg>

FTP User (anonymous): <username or press ENTER for anonymous mode>

Password: <password or press ENTER for default password in anonymous mode>

Received 28200364 bytes in 4.0 seconds

Unpacking...

ok

>> Software Management#

Activating the software upgrade package

The Nortel SNAS 4050 can hold up to two software versions simultaneously. To view the current software status, use the /boot/software/cur command.

When a new version of the software is downloaded to the Nortel SNAS 4050, the software package is decompressed automatically and marked as unpacked. After you activate the unpacked software version (which causes the Nortel SNAS 4050 to reboot), the software version is marked as permanent. The software version previously marked as permanent will then be marked as old.

For minor and major releases, the software upgrade occurs in synchronized fashion among the set of Nortel SNAS 4050 devices in a cluster. If a Nortel

SNAS 4050 device in a cluster is not operational when the software is upgraded, it will automatically pick up the new version when it is started.

Note: If more than one software upgrade has been performed on a cluster while a Nortel SNAS 4050 device has been out of operation, the software version currently in use in that cluster must be reinstalled on that Nortel SNAS 4050 device. For more information about how to

perform a reinstall, see “Reinstalling the software” on page 763

.

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When you have downloaded the software upgrade package, you can inspect its status with the /boot/software/cur command.

4 At the Software Management# prompt, enter the following command:

>> Software Management# cur

Version Name Status

------- ---- ------

The downloaded software upgrade package is indicated with the status unpacked. The software versions can be marked with one out of four possible status values. The meaning of these status values are:

— unpacked means that the software upgrade package has been downloaded and automatically decompressed.

— permanent means that the software is operational and will survive a reboot of the system.

— old means the software version has been permanent but is not currently operational. If a software version marked old is available, it is possible to switch back to this version by activating it again.

— current means that a software version marked as old or unpacked has been activated. As soon as the system has performed the necessary health checks, the current status changes to permanent.

To activate the unpacked software upgrade package, use the /boot/ software/activate command.

Note: When you activate a software upgrade on a Nortel SNAS 4050 device, all the Nortel SNAS 4050 devices in the cluster reboot. All active sessions are lost.

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5 At the Software Management# prompt, enter:

>> Software Management# activate x.x

Confirm action 'activate'? [y/n]: y

Activate ok, relogin <you are logged out here>

Restarting system.

login:

Note: Activating the unpacked software upgrade package may cause the command line interface (CLI) software to be upgraded as well.

Therefore, you will be logged out of the system, and will have to log in again. Wait until the login prompt appears. This may take up to two minutes, depending on your type of hardware platform and whether the system reboots.

6 Log in again and verify the new software version:

>> Main# boot/software/cur

Version Name Status

------- ---- ------

In this example, version x.x is now operational and will survive a reboot of the system, while the software version previously indicated as permanent is marked as old.

Note: If you encounter serious problems while running the new software version, you can revert to the previous software version (now indicated as old). To do this, activate the software version indicated as

old. When you log in again after having activated the old software version, its status is indicated as current for a short while. After about one minute, when the system has performed the necessary health checks, the current status is changed to permanent.

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