3. In the Split Pairs window, ensure that the pair to be split appears in the
Selected Pairs table.
4. For Secondary Volume Write, specify whether the host can write to the
S-VOL while the pair is split.
¢
Enable. Accepts host writes to the S-VOL. Note the following:
- If you plan to resynchronize the pair after the S-VOL has been
written to while split, you must select Depend on Primary Volume
Fence Level for the Primary Volume Write option, below. This
ensures that P-VOL and S-VOL bitmaps are merged when the pair is
resynchronized.
- If you specify Enable for this option, and also need the P-VOL to
continue accepting host I/O, make sure to select Depend on
Primary Volume Fence Level for Primary Volume Write.
Enable is only available when performing the split operation from the
pair's primary storage system.
¢
Disable (default), to cause host input to be rejected by the S-VOL
while the pair is split.
5. For Primary Volume Write, specify whether writing to the P-VOL is
enabled while the pair is split.
TC pair operations
6-7
Hitachi TrueCopy® User Guide for Hitachi Virtual Storage Platform Gx00 and Fx00 Models
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