A customer wants to migrate data between two Hitachi Unified Storage systems using TrueCopy. What are two requirements? (Choose two.)

Question

Options

• AThe DM-LU must be greater than 10GB.
• BThere must be FC connectivity between the arrays.
• CThe P-Vol and S-Vol size must be equal.
• DA Command Device must be created.

Explanation

B (FC connectivity) and C (equal P-Vol/S-Vol size) are the two correct answers.

TrueCopy is Hitachi's synchronous remote replication feature and requires Fibre Channel (FC) connectivity between the source and target arrays - this is the transport layer over which replication I/O flows between systems. Additionally, the Primary Volume (P-Vol) and Secondary Volume (S-Vol) must be exactly the same size; TrueCopy performs block-level mirroring, so a size mismatch will prevent pair creation entirely.

A is wrong because there is no 10GB minimum size rule for TrueCopy volumes - the DM-LU (Data Migration Logical Unit) is a concept tied to Hitachi's internal data migration feature, not TrueCopy. D is wrong because while Command Devices are used in HORCM-based (host-side) replication management configurations, they are not a universal hard requirement for TrueCopy itself between two HUS arrays.

Memory tip: Think "FC = highway between arrays, Equal size = matching lanes" - TrueCopy needs a road (FC link) and identically sized volumes to mirror traffic block-for-block.

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