D-Link ShareCenter Pro DNS-1200-05 Handleiding (263 Pagina's)

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82D-Link ShareCenter Pro 1200-05 User Manual

Section 3 - Conguration

iSCSI Target - iSCSI LUN

Introduction:

In an iSCSI environment, LUNs are essentially numbered disk drives. An initiator negotiates with a target to establish connectivity

to a LUN; the result is an iSCSI connection that emulates a connection to a SCSI hard disk. The LUN can be created by the

following two methods.

Thin provisioning:

The space is allocated only when needed. Advantages of Thin Provisioning on the ShareCenter Pro are as follows. With thin

provisioning, you can exibly allocate disk space (on the iSCSI LUN) to the server applications allowing the storage capacity to

expand at any time regardless of the current storage size. The addition of storage space on the servers can easily be completed

for dierent operating systems each using their own iSCSI initiator. Thin provisioning allows ecient storage management since

the system administrator only has to monitor the storage capacity of the single ShareCenter Pro server rather than multiple

hard drives or tapes on other sub-storage systems. Also, over-allocation of space is allowed since the storage capacity of the

NAS can be expanded.

Pre-Allocate:

The space will be allocated now. If you create a 50 GB LUN, then 50 GB will be immediately reserved for that LUN. (Note that

the creation will also take more time because of that process).

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