Sun Storage 6180 Array
 
Sun Storage 6580 Array
 
Sun Storage Flexline 280 Array
 
Sun Storage 6780 Array
 
Sun Storage 2540-M2 Array
 
Sun Storage 6140 Array
 
Sun Storage Flexline 380 Array
 
Sun Storage 6540 Array
 
Sun Storage 6130 Array
 
Sun Storage Flexline 240 Array
 

PLA-Support>Sun Systems>DISK>Arrays>SN-DK: 6130
 

Applies to:

Goal

The Sun Storage 6000 Array family and the Sun Storage 2540-M2 Array support data replication.  Data replication (sometimes also called remote volume mirroring or RVM) is the ability to copy data from a primary volume (source) on one array to a secondary volume (destination) on another array. This article provides guidance on getting started, and it points out important tips to help you configure data replication successfully.

Solution

The best resource to help you configure data replication is the Sun StorageTek Array Administration Guide. Look for the section in Chapter 4 entitled "Configuring Data Replication." This product manual was written some time ago but is still valid. The current list of supported arrays includes Sun Storage Array models 6130, 6140, 6180, 6540, 6580, 6780, 2540-M2, as well as the Sun Storage Flexline models 240, 280 and 380.

The following list of tips is not a replacement for reading the manual. In our experience, however, these are the items that are most helpful to keep in mind as you work through the documentation.

• Data replication requires a premium license. You must obtain and install a license for each participating array.

• It is possible to perform data replication between two different array models. For example, you can replicate between a Sun Storage 6780 Array and a Sun Storage 6580 array.

• It is highly recommended that firmware versions match when replicating across like arrays. When replicating between two different model arrays, have the latest version of firmware installed on each.

• Installation of the data replication license affects the availability of host channel ports. After you apply the license, the array dedicates the highest number host port on each controller solely to data replication. For controllers with 2 host ports, port 2 is used. For controllers with 4 host ports, port 4 is used. For controllers with 8 host ports, port 8 is used.

• Data replication requires a storage area network (SAN) that includes one or more fibre channel switches.

• The replication port in controller A of the primary array, should be zoned to the replication port of controller A of the secondary array. Similarly the replication port of controller B of the primary array, should be zoned to the replication port in controller B of the secondary array.

• Participating arrays must be registered with the same instance of Common Array Manager (CAM).

• Careful consideration needs to given to synchronous vs. asynchronous replication mode. Please thoroughly review the sections of Chapter 4 that discuss this topic.

• When you install the data replication license, it will ask you where you want to create two repository volumes.  You can put repository volumes in any Vdisk or create them on their own Vdisk.  If an existing Vdisk is used, make sure the Vdisk is not a RAID 0 (choose a redundant Vdisk) that is not being heavily used by the servers.

• A primary volume (source) and secondary volume (destination) must be owned by the same controller (A or B). They do not need to be configured with the same RAID level. For example, a RAID-1 volume can be replicated successfully to a RAID-5 volume. The secondary volume needs to be equal to (or greater than) the size of the primary volume. 

• Up to 128 replication sets are supported for the FLX380, 6540, 6580 and 6780
  Up to 64 replication sets are supported for FLX280, FLX240, 6130, 6140 & 6180 and 2540-M2

• Finally, when everything is configured and data has synchronized between arrays, be sure to test!

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