19
(Notes on using Data Replication Function)
In case you use data replication function (without snapshot) with D8 Series, select the minimum
size of cache memory from the following table according to the total HDD capacity and the total
replication volume (RV):
Total HDD
Physical capacity
Other than RAID-6 configuration: up to maximum capacity, in RAID-6 configuration:
up to 270,000GB
Cache capacity *1
4GB
8GB
-16GB
-24GB
-32GB
-40GB
-48GB
-56GB -128GB
RV total capacity
(When not using
RDR/DR)
40TB 40TB 80TB
120TB
160TB
200TB
240TB 280TB
500TB
RV total capacity
(When using
RDR/DR )
- 20TB 60TB
80TB
120TB
180TB
220TB 260TB
500TB
Total HDD
Physical capacity
In RAID-6 configuration: 270,001-530,000GB
Cache capacity *1
4GB
8GB
-16GB
-24GB
-32GB
-40GB
-48GB
-56GB -128GB
RV total capacity
(When not using
RDR/DR)
35TB 35TB 75TB
115TB
155TB
195TB
235TB 275TB
500TB
RV total capacity
(When using
RDR/DR )
- 15TB 55TB
95TB
135TB
175TB
215TB 255TB
500GB
Total HDD
Physical capacity
In RAID-6 configuration: 530,001-790,000GB
Cache capacity *1
4GB
8GB
-16GB
-24GB
-32GB
-40GB
-48GB
-56GB -128GB
RV total capacity
(When using
RDR/DR)
30TB 30TB 70TB
110TB
150TB
190TB 230T0B 270TB
500TB
RV total capacity
(When using
RDR/DR )
- 10TB 50TB
90TB
130TB
170TB
210TB 250TB
500TB
Total HDD
Physical capacity
In RAID-6 configuration: 790,001GB-maximum capacity
Cache capacity *1
4GB
8GB
-16GB
-24GB
-32GB
-40GB
-48GB
-56GB -128GB
RV total capacity
(When not using
RDR/DR)
25TB 25TB 65TB
105TB
145TB
185TB
225TB 265TB
500TB
RV total capacity
(When using
RDR/DR )
- 5TB 45TB
85TB
125TB
165TB
205TB
245TB
500TB
Note) The above “RV total capacity (when using RDR/DR)” is the capacity in case the buffer area of
semi-synchronous sequence is 256MB
*1 128GB is with 4 nodes configuration.