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SSSU Command Reference

35

Command View EVA Storage System Scripting Utility Reference Guide

OCCUPANCY_ALARM=

The point when a defined percentage of space is used. When this point is reached, 
an event log is generated and sent to the Management Appliance (optionally the 
host system) informing the administrator that the group is becoming full. Do not 
use the percentage sign (%) after the number. The default is 95%.

SPARE_POLICY=

This parameter determines the amount, if any, of storage space set aside for use in 
the event that disks fail. The default is single.

■

NONE—Reserves no space within a disk group to allow for data 
reconstruction in case of failure of disk drives

■

SINGLE—Reserves space within a disk group to allow for data 
reconstruction for failure of a single disk drive

■

DOUBLE—Reserves space within a disk group to allow for data 
reconstruction for failure of two disk drives

Note:  

The space set aside is not in numbers of physical disks. It is the equivalent 

amount of storage space spread across all disks.

Example

ADD DISK_GROUP “\Disk Groups\human_resources” DEVICE_COUNT=12 
SPARE_POLICY=SINGLE OCCUPANCY_ALARM=75

This example creates a new disk group, human_resources. It has 12 physical disks 
with the equivalent of one disk set aside as a spare and sends an event log to the 
Management Appliance when 75% of capacity is reached.