User manual

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VAAI Block Zeroing
Supported
Supported
VAAI Hardware Assisted
Locking
Supported
Supported
VAAI Thin Provisioning and
Space Reclaim
Supported
Not Supported
Thin Provisioning
Supported
Supported
Space Reclamation
Supported (with VAAI or from
Windows 2012 or 8)
Not Supported
Microsoft ODX
Supported
Not Supported
LUN Backup
Not Supported Yet (Snapshot
Replica is advised)
Supported
LUN Snapshot
Supported
1 Time Snapshot
Please note that in general, better system performance can be achieved through block-based LUNs,
thus it is recommended to use block-based LUNs whenever possible.
There are two methods a LUN can be allocated: Thin Provisioning and Instant Allocation:
 Thin Provisioning: Allocate the disk space in a flexible manner. The disk space can be allocated to
the target anytime regardless of the current storage capacity available on the NAS.
Over-allocation is allowed as the storage capacity of the NAS can be expanded using online RAID
capacity expansion.
 Instant Allocation: Allocate the disk space to the LUN instantly. This option guarantees the disk
space assigned to the LUN but may require more time to create the LUN.
A maximum of 256 iSCSI targets and LUNs can be created. For example, if you create 100 targets on
the NAS, the maximum number of LUNs you can create is 156. Multiple LUNs can be created for each
target. However, the maximum number of concurrent connections to the iSCSI targets supported by
the NAS varies depending on network infrastructure and application performance. Excessive
concurrent connections may impact NAS performance.
Note:
 It is NOT recommended to connect to the same iSCSI target with two different clients
(iSCSI initiators) at the same time, as it may lead to data loss or disk damage.
 For ARM-based NAS models, the maximum volume capacity supported for online RAID
capacity expansion is 8TB.
iSCSI Quick Configuration Wizard