●
When a Secondary Backup Is Performed Using a Backup between ETERNUS DX Storage Systems (REC)
The values in the table are calculated based on the requirements when the following copy sessions are set
for the NAS user volume.
•
When a Backup Is Performed Using QuickOPC with OPC Restoration" (page
and requirements when a secondary backup is performed using a backup between ETERNUS DX
storage systems (REC)
Figure 194
Operational Configuration (When a Secondary Backup Is Performed Using a Backup between
ETERNUS DX Storage Systems [REC])
NAS backup volume
NAS user volume
NAS volume backup
(QuickOPC)
SDV#255
SDV#1
SDV#0
NAS volume restoration
(OPC)
ETERNUS DX (on the operation side)
Snapshots
REC
destination volume
NAS backup volume
ETERNUS DX (on the backup side)
NAS volume backup
between storage systems (REC)
NAS volume backup
(QuickOPC)
NAS user volume
(*1)
Restoration (OPC)
(if necessary)
*1:
A NAS user volume is not required when the ETERNUS DX (on the backup side) does not conduct NAS operations.
Table 130
Guidelines for Snapshot Configurable NAS Volume Capacity (When QuickOPC and REC Are Used)
ETERNUS DX
Number
of
snapshot
generatio
ns
Resolution
´
1
´
2
´
4
´
8
´
16
´
32
´
64
DX100 S5 (Copy
table size: 512MB)
16
1,724
(1.7)
3,448
(3.4)
6,896
(6.7)
13,793
(13.5)
27,586
(26.9)
55,172
(53.9)
110,344
(107.8)
32
935
(0.9)
1,871
(1.8)
3,742
(3.7)
7,485
(7.3)
14,971
(14.6)
29,943
(29.2)
59,886
(58.5)
64
488
(0.5)
977
(1.0)
1,954
(1.9)
3,908
(3.8)
7,817
(7.6)
15,634
(15.3)
31,268
(30.5)
DX200 S5 (Copy
table size: 512MB)
16
1,724
(1.7)
3,448
(3.4)
6,896
(6.7)
13,793
(13.5)
27,586
(26.9)
55,172
(53.9)
110,344
(107.8)
32
935
(0.9)
1,871
(1.8)
3,742
(3.7)
7,485
(7.3)
14,971
(14.6)
29,943
(29.2)
59,886
(58.5)
64
488
(0.5)
977
(1.0)
1,954
(1.9)
3,908
(3.8)
7,817
(7.6)
15,634
(15.3)
31,268
(30.5)
128
249
(0.2)
499
(0.5)
998
(1.0)
1,997
(2.0)
3,994
(3.9)
7,988
(7.8)
15,976
(15.6)
C. Snapshot Configurable NAS Volume Capacity (Guideline)
332
Design Guide
Содержание ETERNUS DX S5 Series
Страница 335: ......