Chapter 9
Advanced Copy Settings
This chapter explains the required setting to perform an Advanced Copy. This chapter also provides a proce-
dure on how to perform an Advanced Copy.
9.1 Advanced Copy Basic Settings
This section describes the basic settings to use Advanced Copy.
9.1.1 Copy Priority Settings
Specify the copy priority when using the EC (*1) and OPC (*2) functions.
To set the copy priority, the host I/O load and the copy processing load must be taken into consideration. The
specified copy priority is applied not only to the next session, but also to the existing session.
*1: An EC includes ECs and RECs with direct connections.
*2: An OPC includes OPC, QuickOPC, SnapOPC, and SnapOPC+.
1 Click the [Advanced Copy] tab on the navigation of the ETERNUS Web GUI screen. Then, click [Setting]
in [Category].
2 In [Action] on the [Setting] screen, click [Modify EC/OPC Priority].
3 Select the EC/OPC priority and click the [Set] button.
• Automatic Priority
This mode changes the EC/OPC priority automatically in response to the operating load status.
• High Priority
This mode operates by making maximum use of internal resources.
This mode greatly affects host access performance, thus should not be used during normal operation.
Use when the operation load is low.
• Middle Priority
This mode operates slightly slower than the High Priority mode.
Select this mode when performance is greatly affected by the High Priority mode, but the copy speed
is too slow with the Low Priority mode.
• Low Priority
This mode reduces the effect on host access.
Select this mode when using EC and/or OPC during operation.
141
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Configuration Guide (Basic)
Copyright 2017 FUJITSU LIMITED
P3AG-1832-04ENZ0
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