The procedure for starting the HiRDB system at the main site follows:

Procedure

1. Start the instance of RAID Manager that is being used by HiRDB.
2. Check the status of paired logical volume groups. For details about how to check them, see 4.1(2) Checking the status of paired logical volume groups.
3. Execute the pdstart command to start the HiRDB system at the main site.
   

   Note

   Do not execute the pdstart command using the system startup initialization command (for example, /sbin/rc) provided for each platform.

Before starting the HiRDB system at the main site, check the volume attribute and pair status of the paired logical volume groups. Depending on their combination, it may not be possible to start HiRDB or to switch to the remote site. Use the following procedure to check whether it is possible to start HiRDB and to switch to the remote site.

Procedure

1. Check the volume attribute and pair status of the paired logical volume groups. Check each paired logical volume group, and determine whether it is possible to start the HiRDB system at the main site and to switch to the remote site, using the information in Table 4-1. Do this for all paired logical volume groups.
2. Using the information in Table 4-2, determine whether it is possible to start the HiRDB system at the main site.
3. Using the information in Table 4-3, determine whether it is possible to switch to the remote site.

For details about the corrective action to take if it is not possible to start the HiRDB system at the main site or to switch to the remote site due to an error, see 6. Error Handling.

Table 4-1 Whether it is possible to start the HiRDB system at the main site and whether it is possible to switch to the remote site

Real Time SAN Replication processing method	Protection mode	Volume attribute	Pair status	Whether each paired logical volume group's HiRDB can be started	Whether each paired logical volume group can be switched to the remote site
All synchronous or hybrid method	data	SMPL	None	Prohibited	N
		S-VOL	Any	Prohibited	A
		P-VOL	COPY	Possible#3	N
			PSUE	Not possible	Y#1
			PSUS	Prohibited	N
			PAIR	Possible	Y#1
	never	SMPL	None	Possible	N
		S-VOL	Any	Prohibited	A
		P-VOL	COPY	Possible	N
			PSUE	Possible	N
			PSUS	Possible	N
			PAIR	Possible	Y#1
All asynchronous method	--	SMPL	None	Possible	N
		S-VOL	Any	Prohibited	A
		P-VOL	COPY	Possible	N
			PSUE	Possible	Y#2
			PSUS	Possible	N
			PAIR	Possible	Y#2

Legend:

--: Not applicable

Pair status:

None: No pair status is assigned.

Any: Any pair status is assigned.

Whether each paired logical volume group's HiRDB can be started:

Possible: The HiRDB system at the main site can be started.

Not possible: The HiRDB system at the main site cannot be started.

Prohibited: HiRDB must not be started because of the combination of the volume attribute and pair status.

Whether each paired logical volume group can be switched to the remote site:

Y: Can be switched to the remote site.

A: Already switched to the remote site.

N: Switching to the remote site may not be successful.

#1: No data loss occurs.

#2: Data loss occurs.

#3: If the hybrid method is used, HiRDB can be started only when the database pair status is PAIR.

Table 4-2 Starting the HiRDB system at the main site

Whether each paired logical volume group's HiRDB can be started#1			Whether HiRDB can be started when combined
Possible	Not possible	Prohibited
Yes	Yes	Yes	Prohibited
		No	Not possible#2
	No	Yes	Prohibited
		No	Possible
No	Yes	Yes	Prohibited
		No	Not possible
	No	Yes	Prohibited

Legend:

Possible: The HiRDB system at the main site can be started.

Not possible: The HiRDB system at the main site cannot be started.

Prohibited: HiRDB must not be started because of the combination of the volume attribute and pair status.

#1

Same as Whether each paired logical volume group's HiRDB can be started in Table 4-1 Whether it is possible to start the HiRDB system at the main site and whether it is possible to switch to the remote site

#2

If you shut down a paired logical volume group that cannot be started, you man then be able to start HiRDB.

Table 4-3 Whether it is possible to switch to the remote site

Whether each paired logical volume group can be switched to the remote site#			Whether it is possible to switch to the remote site when combined
Y	A	N
Yes	Yes	Yes	N
		No	N
	No	Yes	N
		No	Y
No	Yes	Yes	N
		No	A
	No	Yes	N

Legend:

Y: Can be switched to the remote site.

A: Already switched to the remote site.

N: Switching to the remote site may not be successful.

#

Same as Whether each paired logical volume group can be switched to the remote site in Table 4-1 Whether it is possible to start the HiRDB system at the main site and whether it is possible to switch to the remote site