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5. Functions <Data Replication/Snapshot (2)>
(2) Snapshot
When using Snapshot (only), the maximum capacity of snapshot related volumes is as follows.
Model
Total capacity of
M110
~ Max. Capacity
M310
~ Max. Capacity
■ Snapshot Support Matrix
Model
8Gb FC Host I/F
16Gb FC Host I/F
1Gb iSCSI Host I/F
10Gb iSCSI(Copper) Host I/F
10Gb iSCSI (Optical)Host I/F
12Gb SAS Host I/F
Single Controller
Dual Controller
NEC StorageManager Express(Embedded)
NEC StorageManager
Sum of Snapshot Related Volumes
= Master Volume Capacity + Snapshot Volume Capacity + Snapshot Reserved Area Capacity
<Calculation Example>
Master Volume 2TB has 8 generations of snapshot volumes and the snapshot reserved area per generation is
20%.
Snapshot Reserved Area = 2TB x 20% x 8 = 3.2TB
Sum of Snapshot Related Volumes = 2TB + 16TB + 3.2TB = 21.2TB
Master
2TB
8 generations
dynamic pool
Snapshot
#1
Snapshot
2TB
2TB
Max. size of LD for
snapshot
10TB
10TB
Snapshot (DynamicSnapVolume)
16TB
Differentia
#2
l Data
Snapshot
#3
2TB
Snapshot
#8
2TB
NEC Confidential
Sum of snapshot
Max. generation
related volumes
160TB
160TB
○:Supported -:Not supported
M110
-
3.2T
B
Snapshot
Reserved
Area
Updated
Differential
of snapshots
16
16
M310
-
-
-
71

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M110

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