Thin Image host access and pair status

The status of Thin Image (HTI) pairs depends on whether the hosts can read from or write to the Thin Image pair P-VOL or S-VOLs.

The following table explains the host access and pair status for snapshot pairs.

HTI pair status	P-VOL		S-VOL
HTI pair status	Read	Write	Read	Write
SMPL	Yes	Yes	No	No
SMPL(PD) or SMPP	Yes	Yes	No	No
COPY	Yes	Yes	No	No
PAIR/PFUL	Yes	Yes	No	No
PSUS/PFUS	Yes	Yes	Yes	Yes
COPY(RS-R) or RCPY	Yes	Yes	No	No
PSUE	Yes	Yes	No	No
Legend Yes: Hosts can access the volume No: Hosts cannot access the volume

CautionIf a host uses a software application to monitor Thin Image pair volumes other than Thin Image, the S-VOL status determines if the software application ends abnormally. For example, if the S-VOLs are in a status other than "PSUS" and "PFUS," the host can reject access.

If a host connects to at least two ports, an abnormality can occur with ports that are not connected to S-VOLs rejecting access from hosts. To resolve these issues, close the software application that monitors volumes.

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Thin Image host access and pair status