IBM DS6000 Series ユーザーズマニュアル

Chapter 6. Copy Services 

Persistent FlashCopy allows the FlashCopy relationship to remain even after the copy 
operation completes. You must explicitly delete the relationship.

In a remote mirror environment, commands to manage FlashCopy at the remote site can be 
issued from the local or intermediate site and transmitted over the remote mirror Fibre 
Channel links. This eliminates the need for a network connection to the remote site solely for 
the management of FlashCopy.

The Remote Mirror and Copy feature (formally called Peer-to-Peer Remote Copy, or PPRC) 
is a flexible data mirroring technology that allows replication between volumes on two or more 
disk storage systems. You can also use this feature for data backup and disaster recovery. 
Remote Mirror and Copy is an optional function. To use it, you must purchase the Remote 
Mirror and Copy 2244 function authorization model, which is 2244 Model RMC. 

DS6000 server enclosures can participate in Remote Mirror and Copy solutions with the ESS 
Model 750, ESS Model 800, and DS6000 and DS8000 server enclosures. To establish a 
PPRC relationship between the DS6000 and ESS, the ESS needs to have licensed internal 
code (LIC) version 2.4.2 or later. 

The Remote Mirror and Copy feature can operate in the following modes:

Metro Mirror provides real-time mirroring of logical volumes between two DS6000s that can 
be located up to 300 km from each other. It is a synchronous copy solution where write 
operations are completed on both copies (local and remote site) before they are considered 
to be complete.

 This function is only available through the use of CLI commands and not the DS 

Storage Manager GUI at the current time.