HP StorageWorks XP Remote Web Console Software User Manual

Page 219

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Table 69 XP Disk Array Response Characteristics to Failure Conditions (continued)

FREEZE Function

Expected Messages

TC for Mainfr. Pairs

Suspended?

Failure Condition

Not activated

(1) IEA480 message
(SIM for TrueCopy for
Mainframe path
blocked) is reported
when the next I/O to
any device in this
MCU is issued.

(2) No IEA491 or
IEA494 messages are
displayed.

No

Failure of a link between the MCU and RCU

Not activated

(1) IEA480 (SIM for
cache blocked) is
reported when the
next I/O to any device
in this MCU is issued.

(2) No IEA491 or
IEA494 messages are
displayed.

No*

One side of MCU
cache blocked due to
failure

Failure of NVS on the
MCU;

Failure of MCU read
cache

Not activated

No IEA480, IEA491,
or IEA494 messages
are displayed.

No*

One side of MCU
cache blocked due to
maintenance

Not activated

No IEA480, IEA491,
or IEA494 messages
are displayed.

No*

One side of MCU
cache blocked by SET
CACHE OFF

Not activated

No IEA480, IEA491,
or IEA494 messages
are displayed. The
MCU returns CC=3
for all I/Os.

No

Both sides of MCU cache blocked due to
failure

Not activated

(1) The RCU reports
IEA480 message (SIM
for physical device
blocked or port of
physical device
blocked) to either the
MCU or the host
processor (whichever
issues the next I/O
first) when the next
I/O is issued to any
volume in the parity
group. If MCU
receives the SIM, it
passes the SIM to the
attached host
processor, and the
IEA480 message is
reported when the
next I/O to this MCU
is issued to any main
(primary) volume
paired with the volume
in the parity group.

(2) No IEA491 or
IEA494 messages are
displayed.

No

Failure of one physical
device in a parity
group

Failure of a disk on
the RCU

Overview of PPRC Commands

219

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