Chapter 7. Storage migration 355
Verifying prerequisites for SAS connections
For migrating from a Storwize V3500, Storwize V3700, or Storwize V5000 Gen1, ensure that
all systems are running a software level that can support SAS migration.
Cable the Storwize V5000 Gen2 directly to the external storage system that you want to
migrate. Depending on the Storwize V5000 Gen2 model, the cabling differs slightly. The
Storwize V5010 and Storwize V5030 need four SAS cables (two SAS cables per node
canister) that are connected to the optional SAS card. The Storwize V5020 needs four SAS
cables (two SAS cables per node canister) that are connected to SAS port 2 and SAS port 3.
The Storwize V3500 or Storwize V3700 source systems require two cables per node canister.
Each canister must be connected to each Storwize V5000 Gen2 canister. On the V3500 or
V3700, you can use SAS ports 1, 2, or 3. Do not use SAS port 4.
Examples of how to connect a Storwize V5000 Gen2 to the Storwize V3500/V3700 are shown
in Figure 7-4, Figure 7-5, and Figure 7-6 on page 356.
Figure 7-4 Connecting SAS cables from a Storwize V3500 or V3700 to a Storwize V5010 system
Figure 7-5 Connecting SAS cables from a Storwize V3500 or V3700 to a Storwize V5020 system
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