IBM 201 manual Global Settings, Volume Settings

persistent images as one-time events or regularly repeated events. You can access the PSM tasks in the Disks/Persistent Storage Manager task group within the Windows 2000 for Network Attached Storage user interface, in one of two ways:

vBy going to the IBM NAS Admin console on the appliance desktop (via Terminal Services or directly-attached keyboard, monitor, and mouse) and selecting Persistent Storage Manager (this automatically launches the Windows 2000 for Network Attached Storage user interface and brings up the Disks/Persistent Storage Manager page containing the PSM tasks).

vBy starting the Windows 2000 for Network Attached Storage user interface directly

Once you create a persistent image, it appears as a directory on the original drive. Access rights and permissions from the original drive are inherited by the persistent image. Persistent images are used in the same way as conventional drives.

However, unlike conventional drives, persistent images are records of the content of the original drive at the time you created the persistent image. Persistent images are retained following shutdown and reboot.

There are six PSM tasks in the Disks/Persistent Storage Manager group:

vGlobal Settings

vVolume Settings

vPersistent Images

vSchedules

vRestore Persistent Images

vDisaster Recovery

Each of these tasks are described in the following sections. More detailed descriptions and instructions for each of the control panels and topics are contained in the online help.

Global Settings

On this panel you can configure the following attributes of the persistent image function:

Attribute:	Default value:
Maximum number of persistent images	250
Inactive period	5 seconds
Inactive period wait timeout	15 minutes

Volume Settings

This panel displays statistics for each volume, such as total volume capacity, free space, and cache file size and usage. You can also select any volume and configure volume-specific PSM attributes for that volume, such as:

Attribute:	Default value:
Cache-full warning threshold	80 percent full
Cache-full persistent image deletion threshold	90 percent full
Cache size	15 percent (of the total volume
	capacity)

Chapter 6. Additional administrative functions 37