Processing remote FlashCopy (inband) transactions

This scenario describes how to successfully process remote FlashCopy (formerly known as inband FlashCopy) transactions. These transactions can only be processed using the DS CLI remote FlashCopy commands. These transactions cannot be managed through the GUI.

You must be logged into the DS CLI application in interactive command mode.

Remote FlashCopy commands are issued to a source volume of a remote mirror and copy volume pair on a local storage unit. This enables a FlashCopy pair to be established at the remote site and eliminates the need for a network connection to the remote site solely for the management of FlashCopy. The following steps are based on an example that uses the sites LSS 22 and LSS 2A.

You must determine which volumes are available for use and then establish a remote mirror and copy path between LSS 22 and LSS 2A.
1. Issue the lsavailpprcport command to obtain a report that lists which volumes are available for use. Enter the lsavailpprcport command at the dscli command prompt with the following parameters and variables:
```
dscli> lsavailpprcport -dev IBM.1750-1300861 
-remotedev IBM.1750-1300871 -remotewwnn 5005076303FFC03D 22:2A
```
  The following report is generated.
  
  Local port Attached port Type
  
  I0030 I0031 FCP
  
  I0031 I0030 FCP
  
  I0100 I0101 FCP
  
  I0101 I0100 FCP
2. Issue the mkpprcpath command to establish the remote mirror and copy path between LSS 22 and LSS 2A. Enter the mkpprcpath command at the dscli command prompt with the following parameters and variables:
```
dscli>mkpprcpath -dev IBM.1750-1300861 -remotedev IBM.1750-1300871 
-remotewwnn 5005076303FFC03D
-srclss 22 -tgtlss 2A I0030:I0031 I0100:I0101
```
  The following confirmation is displayed if your command input is correct.
```
Date/Time: February 7, 2005 4:25:04 PM IST IBM DSCLI Version: 0.0.0.0 DS:
 IBM.1750-1300861
CMUC00149I mkpprcpath: Remote Mirror and Copy path 22:2A successfully
 established.
```

Local port	Attached port	Type
I0030	I0031	FCP
I0031	I0030	FCP
I0100	I0101	FCP
I0101	I0100	FCP

Issue the mkpprc command to establish a remote mirror and copy pair (2200 to 2A00). Enter the mkpprc command at the dscli command prompt with the following parameters and variables:

dscli>mkpprc -dev IBM.1750-1300861 -remotedev IBM.1750-1300871
 -type mmir 2200:2A00

The following confirmation is displayed if your command input is correct.

Date/Time: February 7, 2005 4:25:33 PM IST IBM DSCLI Version: 0.0.0.0 DS:
 IBM.1750-1300861
CMUC00153I mkpprc: Remote Mirror and Copy volume pair relationship
 2200:2A00 successfully created.

Issue the mkremoteflash command to use LSS 22 on the local site as a conduit LSS for new remote Flash Copy relationships on the remote storage unit. These new relationships use volume 2A00 as their source. The target can be any other volume on the remote storage unit (in this scenario, 2A01). Enter the mkremoteflash command at the dscli command prompt with the following parameters and variables:
```
dscli>mkremoteflash -dev IBM.1750-1300871 -conduit IBM.1750-1300861/22 
-record 2A00:2A01
```
The following confirmation is displayed if your command input is correct.
```
Date/Time: February 7, 2005 4:28:11 PM IST IBM DSCLI Version: 0.0.0.0
 DS: IBM.1750-1300871
CMUC00173I mkremoteflash: Remote FlashCopy volume pair 2A00:2A01 successfully 
created. Use the lsremoteflash command to determine copy completion.
```
Issue the resyncremoteflash command because the remote FlashCopy relationship (2A00:2A01) was created with the -record parameter. Enter the resyncremoteflash command at the dscli command prompt with the following parameters and variables:
```
dscli>resyncremoteflash -dev IBM.1750-1300871 -conduit IBM.1750-1300861/22 
-record 2A00:2A01
```
The following confirmation is displayed if your command input is correct.
```
CMUC00175I resyncremoteflash: Remote FlashCopy volume pair 2A00:2A01 
successfully resynched. Use the lsremoteflash command to determine copy
 completion.
```
Issue the lsremoteflash command to verify that the transaction has processed as you intended. Enter the lsremoteflash command at the dscli command prompt with the following parameters and variables:
```
dscli>lsremoteflash -dev IBM.1750-1300871 -conduit IBM.1750-1300861/22 2A00:2A01
```
The following report is displayed if your command input is correct.

ID SrcLSS Sequence Num ActiveCopy Recording

2A00:2A01 2A 0 Disabled Enabled

Persistent Revertible
SourceWrite
Enabled

TargetWrite
Enabled

Background
Copy

Enabled Disabled Disabled Disabled Enabled