Iscsi Targets Screens - ZyXEL Communications NAS Series User Manual

The following table describes the labels in these screens.
Table 23 Create a New LUN
LABEL
Step 1. Set Up LUN Properties
Name
Location
Capacity
Allocation Mode
Enable Write Back
Next
Cancel
Step 2. Summary
Use this screen to review the settings you configured in the last step.
Name
Location
Capacity
Allocation Mode
Write Back
Back
Apply
Cancel

8.4.2 iSCSI Targets Screens

The iSCSI target refers to the storage resource that is actually attached to the iSCSI storage
device. The initiator can manage the assigned disk volume on the iSCSI target over the Internet as
if it was the initiator's internal storage volume.
iSCSI Targets allows you to create, edit, and delete an iSCSI target and map a target to an
existing LUN. Click Storage Manager > iSCSI > iSCSI Targets to show the following screen.
Chapter 8 Storage Manager
DESCRIPTION
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.
Select a volume to create the LUN on.
Type the size of the LUN in this field.
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.
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.
Click Next to go to the next step.
Click Cancel to close the screen without saving any settings.
Displays the name of the LUN.
Displays the name of the volume the LUN is located in.
Displays the size of the LUN.
Displays the allocation method the LUN applies.
Displays whether the Write Back feature is enabled or disabled.
Click Back to go to the previous step.
Click Apply to save the settings.
Click Cancel to close the screen without saving any settings.
Cloud Storage User's Guide
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