ZyXEL NAS326 User Guide - Page 86

iSCSI Targets Screens

Page 86 highlights

Chapter 8 Storage Manager The following table describes the labels in these screens. Table 23 Create a New LUN LABEL DESCRIPTION Step 1. Set Up LUN Properties Name Type a LUN name in this field. Location Capacity Allocation Mode Enable Write Back 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. Next Cancel Step 2. Summary 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. Use this screen to review the settings you configured in the last step. Name Displays the name of the LUN. Location Displays the name of the volume the LUN is located in. Capacity Displays the size of the LUN. Allocation Mode Displays the allocation method the LUN applies. Write Back Displays whether the Write Back feature is enabled or disabled. Back Click Back to go to the previous step. Apply Click Apply to save the settings. Cancel Click Cancel to close the screen without saving any settings. 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. Cloud Storage User's Guide 86

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Chapter 8 Storage Manager
Cloud Storage User’s Guide
86
The following table describes the labels in these screens.
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.
Table 23
Create a New LUN
LABEL
DESCRIPTION
Step 1. Set Up LUN Properties
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.
Step 2. Summary
Use this screen to review the settings you configured in the last step.
Name
Displays the name of the LUN.
Location
Displays the name of the volume the LUN is located in.
Capacity
Displays the size of the LUN.
Allocation Mode
Displays the allocation method the LUN applies.
Write Back
Displays whether the Write Back feature is enabled or disabled.
Back
Click
Back
to go to the previous step.
Apply
Click
Apply
to save the settings.
Cancel
Click
Cancel
to close the screen without saving any settings.