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Application Note
Remote Data Migration for iSR6200
Products Affected
QLogic Storage Router
iSR6240
iSR6250
iSR6260
1
Introduction
This application note provides instructions for performing remote data migration using the QLogic
iSR6200 Series of intelligent Storage Routers listed in the Products Affected table. These routers are
collectively referred to as the iSR6200 throughout this application note. The iSR6200 command line
®
interface is referred to as the CLI, and the SANsurfer Router Man
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4 – Configuration Use Case 2: The source and destination arrays are at the local site initially. For Use Case 2, after the initial copying operation, the remote migration is moved to the remote site. The iSR6200 supports a maximum of eight paths per array. When using the topology described in Section 6.1 to connect to the remote array, the array on the local site supports a maximum of four paths if the destination array is a Fibre Channel array. The iSCSI presented targets are added as addi
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4 – Configuration 4.2 Configuring Local and Remote iSR6200 Routers for iSCSI Presentation To configure local and remote iSR6200 routers for iSCSI presentation, follow these steps: 1. Identify the destination array ports to use for remote migration. 2. Zone the destination array controller ports with remote iSR6200 Fibre Channel ports. 3. Register the remote iSR6200 Fibre Channel ports and provide access to the LUNs on the destination array. 4. Rescan the targets on the remote iSR6200 to discove
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5 – Best Practices 13.After successfully logging in, you see the LUNs on the logged-in target as follows: For Use Case 1, a new array object is formed. Issue the set array command to set the array type and license the array if required. For Use Case 2, the discovered iSCSI target paths appear on the previously existing array with Fibre Channel paths. The Fibre Channel paths are offline, and the iSCSI paths are online. The local router can now access the LUNs through the iSCSI paths. 4.3
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5 – Best Practices Refer to the attached Timeline for Remote Migration Project.xlsx spreadsheet to estimate the amount of data that can be transferred weekly based on the available bandwidth and change rate at the source. NOTE: ® ® The Timeline for Remote Migration Project.xlsx file is a Microsoft Excel spreadsheet that is attached to this PDF. Remote migration projects depend on the available bandwidth, RTT, and change rate for data under migration. This spreadsheet provides an estimate
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6 – Remote Migration Topology Examples Figure 5-1. Example Time Line for Remote Migration Project 6 Remote Migration Topology Examples The following sections illustrate various remote migration topologies: 6.1 Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using iSCSI Presented Targets 6.2 Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using FCIP 6.3 Fibre Channel-to-iSCSI Remote Online and Offline Migration 6.4 iSCSI-to-Fibre Channel Remote Offli
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6 – Remote Migration Topology Examples 6.1 Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using iSCSI Presented Targets The Fibre Channel-to-Fibre Channel topology shown in Figure 6-1 supports both online and offline remote migration. For offline migration, the servers accessing the source LUN must be shut down and do not require a DML. Figure 6-1. Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using iSCSI Presented Targets SN0051424-00 B 7
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6 – Remote Migration Topology Examples 6.2 Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using FCIP The Fibre Channel-to-Fibre Channel topology shown in Figure 6-2 supports both online and offline remote migration. For offline migration, the servers accessing the source LUN must be shut down and do not require a DML. Figure 6-2. Fibre Channel-to-Fibre Channel Remote Online and Offline Migration Using FCIP SN0051424-00 B 8
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6 – Remote Migration Topology Examples 6.3 Fibre Channel-to-iSCSI Remote Online and Offline Migration The Fibre Channel-to-iSCSI topology shown in Figure 6-3 supports both online and offline remote migration. For offline migration, the servers accessing the source LUN must be shut down and do not require a DML. Figure 6-3. Fibre Channel-to-iSCSI Remote Online and Offline Migration SN0051424-00 B 9
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6 – Remote Migration Topology Examples 6.4 iSCSI-to-Fibre Channel Remote Offline Migration The iSCSI-to-Fibre Channel topology shown in Figure 6-4 supports only offline migration. The iSR6200 does not currently support online data migration when the source LUN is from an iSCSI target. Figure 6-4. iSCSI-to-Fibre Channel Remote Offline Migration SN0051424-00 B 10
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Document Revision History Revision A, November 14, 2011 Revision B, December 6, 2011 Changes Made minor edits to improve readability. Modified and attached the bandwidth calculation spreadsheet, and updated the Figure 5-1 screen shot of the spreadsheet. Updated the 6 Remote Migration Topology Examples graphics. Corporate Headquarters QLogic Corporation 26650 Aliso Viejo Parkway Aliso Viejo, CA 92656 949.389.6000 www.qlogic.com International Offices UK | Ireland | Germany | F
