Chapter 5 Storage Manager
NAS Series User’s Guide
83
Step 1 Set up LUN Properties
Figure 63 Creating a New LUN: Set up LUN Properties
The following table describes the labels in these screens.
Step 2 Summary
Use this screen to review the settings you configured in the last step.
Table 38 Create a New LUN: Set up LUN Properties
LABEL DESCRIPTION
Name Type a LUN name in this field.
Note: Valid characters for the name are 0-9, a-z, and A-Z, and the maximum
length is 30 characters. The “-” symbol is allowed as well, but cannot be the
first character.
Location Select a volume to create the LUN on.
Capacity Type the size of the LUN in this field.
Allocation Mode Select the method the NAS uses to allocate storage space to the LUN.
Thin provisioning - Allocate space only when an initiator writes data to it.
Instant allocation - Allocate the specified disk space to the LUN when you create the LUN.
Enable Write Back Select this option to increase the write performance. Write Back is a feature that collects
data in the hard disk’s cache memory first and permanently writes data into the hard disk
when the system is idle.
Note: It also creates a serious data integrity hazard. Data loss may occur if the NAS
experiences unexpected power loss before it has time to write the cached
data to the hard disk.
Next Click Next to go to the next step.
Cancel Click Cancel to close the screen without saving any settings.
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