Halting the storage system

Command to use

Use the halt command to perform an orderly shutdown that flushes file system updates to disk and clears the NVRAM.

Reasons to use the halt command

The storage system stores requests it receives in nonvolatile random-access memory (NVRAM). For the following reasons, you should always execute the halt command before turning the storage system off:

The halt command flushes all data from memory to disk, eliminating a potential point of failure.
The halt command avoids potential data loss on CIFS clients.
If a CIFS client is disconnected from the storage system, the users' applications are terminated and changes made to open files since the last save are lost.

Attention
Never interrupt CIFS service by halting the storage system without giving advance warning to CIFS users. Halting the CIFS service without giving CIFS users enough time to save their changes can cause data loss.

Note
Clients using Windows 95 or Windows for Workgroups can display the CIFS shutdown messages only when the clients' WinPopup program is configured to receive messages. The ability to display messages from the storage system is built into Windows NT and Windows XP.

Halting the storage system

To halt the storage system, complete the following step.

Step	Action
1	Enter the following command: *halt [-d] [-t interval] [-f]* `-d` causes the storage system to perform a core dump before halting. `-t` interval causes the storage system to halt after the number of minutes specified by interval. `-f` prevents one partner in a clustered storage system pair from taking over the other after the storage system halts. Result The storage system displays the following prompt: `ok` When you see this prompt, you can turn the power off.

Step

Action

Enter the following command:

halt [-d] [-t interval] [-f]

-d causes the storage system to perform a core dump before halting.

-t interval causes the storage system to halt after the number of minutes specified by interval.

-f prevents one partner in a clustered storage system pair from taking over the other after the storage system halts.

Result

The storage system displays the following prompt:

ok

When you see this prompt, you can turn the power off.