Possible vol access values for pairs – HP XP Racks User Manual

Page 83

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Description

Item

Navigator and the pair status name in RAID Manager are the same, the pair status name in RAID
Manager is not shown. For more information, see the table of

“Pair status values” (page 30)

.

Serial number of the paired storage system.

S/N(LDKC)

SSID of the paired storage system, or Path group ID that you entered when registering the RCU.

ID

Information about the path from the host to the paired volume appears as port number, the host
group number, and LUN (LDKC:CU:LDEV), separated by hyphens.

Paired VOL

The symbols used in the VOL column might appear at the end of the LDEV number.

Pair type, ESAM or Cnt Ac-S.

Type

The fence level, which is a Cnt Ac-S setting. Does not apply for ESAM pairs.

Fence

The unit of measurement used for storing differential data (by cylinder, track, or auto).

Diff

Shows nothing for ESAM volumes.

CTG

During the copy process, Sync shows the percentage of completion of the copy operation. During
the split volume process, Sync shows the concordance ratio of the specified local volume.

Sync Rate

The quorum disk ID assigned to the ESAM pair.

Quorum Disk ID

Shows which pair volume is online and thus receiving I/O from the host.

VOL Access

For more information, see

“Possible VOL Access values for pairs” (page 83)

.

The number and name of the cache logical partition that the local volume belongs to.

CLPR

You can to determine the volume that is receiving host I/O, which is the “online” volume by checking
the VOL Access values in the Pair Operation window. The particular combination of values (one
for the P-VOL and one for the S-VOL) indicates which volume is the online volume.

Possible VOL Access values for pairs

The following table lists the possible combinations of VOL Access values for a volume pair.

Online volume

VOL access of S-VOL

VOL access of P-VOL

S-VOL status

1

P-VOL status

1

P-VOL

Blank

Access (No Lock)

COPY

COPY

P-VOL

Blank

Blank

PAIR

PAIR

S-VOL

Access (Lock)

Blank

SSWS

Any

2

Blank

Blank

Any

2

Access (Lock)

Blank

PSUS

Any

2

Blank

Blank

P-VOL

Blank

Access (Lock)

PSUS

PSUS

Any

2

Blank

Blank

Any

2

Access (Lock)

Blank

S-VOL

Access (Lock)

Blank

SSWS

Any

2

Blank

Blank

Any

2

Blank

Access (Lock)

P-VOL

Blank

Access (Lock)

SMPL

P-VOL

Blank

Access (No Lock)

PSUE

PSUE

Pair Operation window

83

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