Service information messages (SIMs)

The Virtual Storage Platform G200, G400, G600 generates service information messages (SIMs) when service is required. SIMs are generated by the channel and storage path microprocessors and the service processor (SVP) and are classified according to the following severity levels: service, moderate, serious, or acute. All SIMs related to Universal Replicator processing are reported by the SVP.

The following figure shows a typical 32-byte SIM. The six-digit reference code consists of bytes 22, 23, and 13. The reference code identifies the possible error and determines the severity. The SIM type (byte 28) indicates the component that experienced the error. When the value of byte 22 is 21, the SIM is a control unit SIM. When the value of byte 22 is dx (where x is an arbitrary character), the SIM is a device SIM.

The SIMs are displayed in the Alert tab of the Storage System window of Device Manager - Storage Navigator. If SNMP is installed and operational, each SIM causes an SNMP trap to be sent to the appropriate hosts. Each time a SIM is generated, the amber Message LED on the control window (under the Ready and Alarm LEDs) turns on as an additional alert for the user.

For details about SNMP operations, see the Hitachi Virtual Storage Platform G200, G400, G600 System Administrator Guide. For details about SIM reporting, see the Hardware Reference Guide.

When a UR pair is split by the user or suspended due to an error condition, a SIM is issued by the primary system, secondary system, or both.

SIMs generated by the UR primary system include the device ID of the P-VOL (byte 13).

SIMs generated by the UR secondary system include the device ID of the S-VOL (byte 13).

The following table lists and describes the SIM reference codes for UR operations and indicates the storage system that issues the SIM. To clear UR-related SIMs, contact Hitachi Data Systems customer support.

SIMs requiring intervention


Reference code		Severity	Description	System generating the SIM	SVP log file
Byte 22	Byte 23	Severity	Description	System generating the SIM	SVP log file
21	80	Moderate	A remote path is blocked due to failure.	Primary, Secondary	SIM log
dc	0`x`	Serious	The P-VOL has been suspended. Path recovery is impossible.	Primary	SIM log
dc	1`x`	Serious	The P-VOL has been suspended. A failure has been detected in the primary system.	Primary	SIM log
dc	2`x`	Serious	The P-VOL has been suspended. A failure has been detected in the secondary system.	Primary	SIM log
dc	4`x`	Serious	The P-VOL has been suspended. The pair has been suspended at the secondary system.	Primary	SIM log
dc	5`x`	Serious	The P-VOL has been suspended. A pair has been released at the secondary system.	Primary	SIM log
dc	6`x`	Serious	The S-VOL has been suspended. Path recovery is impossible.	Primary	SIM log
dc	7`x`	Serious	The S-VOL has been suspended. A failure has been detected in the secondary system.	Secondary	SIM log
dc	9`x`	Serious	A delta resync P-VOL has been suspended. A failure has been detected in the primary system.	Primary	SIM log
dc	a`x`	Serious	A volume used in a P-VOL that is configured in a multiple primary and secondary system combination has been suspended. A failure has been detected in other primary and secondary systems.	Primary	SIM log
dc	f1	Serious	The UR Read JNL was interrupted for five minutes. (A failure in the MCU was detected.)	Secondary	SIM log
dc	f3	Serious	The UR Read JNL was interrupted for five minutes. (A failure in the RCU was detected.)	Secondary	SIM log

The following table lists and describes SIMs that do not need immediate intervention but might require intervention later.

SIMs for expected status change, no intervention


Reference code		Severity	Description	System generating the SIM	SVP log file
Byte 22	Byte 23	Severity	Description	System generating the SIM	SVP log file
dc	e0	Moderate	UR M-JNL Meta overflow warning	Primary	SIM log
dc	e1	Moderate	UR M-JNL Data overflow warning	Primary	SIM log
dc	e2	Moderate	UR R-JNL Meta overflow warning	Secondary	SIM log
dc	e3	Moderate	UR R-JNL Data overflow warning	Secondary	SIM log
dc	f0	Moderate	The UR Read JNL was interrupted for one minute. (A failure in the MCU was detected.)	Secondary	SIM log
dc	f2	Moderate	The UR Read JNL was interrupted for one minute. (A failure in the RCU was detected.)	Secondary	SIM log
dc	f4	Moderate	UR M-JNL Meta overflow warning in URxUR multi-target configuration	Primary	SIM log
dc	f5	Moderate	UR M-JNL Data overflow warning in URxUR multi-target configuration	Primary	SIM log

The following table lists and describes service-level SIMs that report expected status changes and require no user intervention.

Service SIMs for expected status changes, no intervention required


Reference code		Severity	Description	System generating the SIM	SVP log file
Byte 22	Byte 23	Severity	Description	System generating the SIM	SVP log file
21	81	Service	The remote path is restored.	Primary, Secondary	SSB log
d8	0`x`	Service	A volume to be used by UR was defined.	Primary, Secondary	SIM log
d8	1`x`	Service	A volume used by UR began copying.	Primary, Secondary	SIM log
d8	2`x`	Service	A volume used by UR completed copying.	Primary, Secondary	SIM log
d8	3`x`	Service	A volume used by UR received a request for suspension.	Primary, Secondary	SIM log
d8	4`x`	Service	A volume used by UR completed a suspension transaction.	Primary, Secondary	SIM log
d8	5`x`	Service	A volume used by UR received a request for deletion.	Primary, Secondary	SIM log
d8	6`x`	Service	A volume used by UR completed a deletion transaction.	Primary, Secondary	SIM log
d8	7`x`	Service	A volume to be used by UR was defined (placed in PSUS immediately).	Primary, Secondary	SIM log
d8	8`x`	Service	A delta resync volume to be used by UR was defined.	Primary	SIM log
d8	9`x`	Service	A delta resync volume used by UR was redefined.	Primary	SIM log
d9	z`x`	Service	A change to an S-VOL was received from the MCU.	Secondary	SIM log
da	z`x`	Service	A change to an S-VOL was received from the RCU.	Secondary	SIM log
dc	8`x`	Service	A volume used by an S-VOL was suspended (PS OFF on the MCU was detected).	Secondary	SIM log