Backup; Table 32 List Of Functions (Copy Methods) - Fujitsu ETERNUS AF250 Design Manual

1. Function
Backup (Advanced Copy)
The following functions (copy methods) are available.

Table 32 List of Functions (Copy Methods)

Number of available sessions
2,048
A copy is executed for each LUN. With ETERNUS SF AdvancedCopy Manager, a copy can also be executed for each
logical disk (which is called a partition or a volume depending on the OS).
A copy cannot be executed if another function is running in the storage system or the target volume. For details
on the functions that can be executed simultaneously, refer to
Simultaneous Executions" (page

Backup

Local Copy
The Advanced Copy functions offer the following copy methods: "Mirror Suspend", "Background Copy", and "Copy-
on-Write". The function names that are given to each method are as follows: "EC" for the "Mirror Suspend" meth-
od, "OPC" for the "Background Copy" method, and "SnapOPC" for the "Copy-on-Write" method.
When a physical copy is performed for the same area after the initial copy, OPC offers "QuickOPC", which only
performs a physical copy of the data that has been updated from the previous version. The SnapOPC+ function
only copies data that is to be updated and performs generation management of the copy source volume.
●
OPC
All of the data in a volume at a specific point in time is copied to another volume in the ETERNUS AF.
OPC is suitable for the following usages:
Performing a backup
•
Performing system test data replication
•
Restoring backup data (restoration after replacing a drive when the copy source drive has failed)
•
●
QuickOPC
QuickOPC copies all data as initial copy in the same way as OPC. After all of the data is copied, only updated data
(differential data) is copied. QuickOPC is suitable for the following usages:
Creating a backup of the data that is updated in small amounts
•
Performing system test data replication
•
• Restoration from a backup
Control software
ETERNUS Web GUI / ETERNUS
CLI
SnapOPC+
167).
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
ETERNUS SF AdvancedCopy
Manager
SnapOPC
SnapOPC+
QuickOPC
OPC
EC
REC
"Combinations of Functions That Are Available for
88
ETERNUS SF Express
SnapOPC+
P3AG-1822-09ENZ0