Owner manual

ESS Disk
Enterprise Storage System disk drive. ESS disks are visible in the tree pane and in the Inventory
view of the Management window. In the tree pane, expand the ESS Disk Collection object to see the
individual ESS disk drives. In the Inventory view, each ESS disk drive is listed on a separate line.
ESS disk drives are not visible in the Physical view.
ESS disks connect to your system through FCSAs in I/O Adapter Module enclosures. For more
information, see the Modular I/O Installation and Configuration Guide and the Fibre Channel
ServerNet Adapter Installation and Support Guide.
Location in OSM Tree: System > ESS Disk Collection > ESS Disk
Example: ESS Disk $DAVON
Attributes
ESS Disk
Service State
Displayed in the Attributes tab and Attributes dialog box only if attention or service is
required. Values
Logical
Logical Device Number
The logical device number used by the NonStop Kernel operating system
to identify the disk.
Example: 7
Backup Path State
The current state of the backup disk path. Values.
Media Size The total size (in kilobytes) of disk storage space.
Active Path
The path that is currently accessing the disk.
Values: Primary, Backup, Mirror, Mirror Backup
Primary Path State
The current state of the primary disk path. Values.
Backup Path
Configured FSAC Location
Displays the configured location of the FCSA FSAC containing the
backup disk path SCSI controller. This attribute is displayed even if the
physical FCSA FSAC is not present.
Access State Indicates whether the disk is active or inactive.
LUN
The logical unit number of the disk.
Example: 0