Server I/Os added to Export Tool 2

Global Active Device for VSP One Block

Version: 10.5.x
Audience: anonymous
Part Number: MK-23VSP1B011-10
ft:lastEdition: 2026-05-04

The number of I/Os (reads and writes) to GAD volumes that is added to Export Tool 2 depends on the GAD status, as shown in the following tables.

Table. Writes to GAD volumes to be added to Export Tool 2
GAD status	P-VOL	S-VOL
Mirrored	The sum of the following values: Number of writes from the server to the P-VOL Number of RIOs to the P-VOL from the S-VOL	The sum of the following values: Number of writes from the server to the S-VOL Number of RIOs to the S-VOL from the P-VOL
Quorum disk blocked or no quorum disk volume	Number of writes from the server to the P-VOL	The sum of the following values: Number of writes from the server to the S-VOL Number of RIOs from the P-VOL to the S-VOL
Mirroring	Number of writes from the server to the P-VOL	Number of RIOs to the S-VOL from the P-VOL
Suspended (when the P-VOL has the latest information)	Number of writes from the server to the P-VOL	Not counted*
Suspended (when the S-VOL has the latest information)	Not counted*	Number of writes from the server to the S-VOL
Blocked	Not counted*	Not counted*
* Reads and writes by a server are illegal requests and cause an error. However, they could be counted as I/O.

Table. Reads from GAD volumes to be added to Export Tool 2
GAD status	P-VOL	S-VOL
Mirrored	Number of reads from the P-VOL by the server	Number of reads from the S-VOL by the server
Quorum disk blocked	Number of reads from the P-VOL by the server	-*
Quorum disk blocked or no quorum disk volume	Number of reads from the P-VOL by the server	Number of reads from the S-VOL by the server
Mirroring	Number of reads from the P-VOL by the server	Not counted*
Suspended (when the P-VOL has the latest information)	Number of reads from the P-VOL by the server	Not counted*
Suspended (when the S-VOL has the latest information)	Not counted*	Number of reads from the S-VOL by the server
Blocked	Not counted*	Not counted*
* Reads and writes by a server are illegal requests and cause an error. However, they could be counted as I/O.

Table. Relation between the number of I/Os added to Export Tool 2 and the number of server I/Os
GAD status	Number of writes	Number of reads
Mirrored	Approximately the same* as the number of writes to the P-VOL or S-VOL	The same as the total number of reads from the P-VOL and S-VOL
Quorum disk blocked	The same as the number of writes to the P-VOL	The same as the number of reads from the P-VOL
Quorum disk blocked or no quorum disk volume	The same as the number of writes to the P-VOL	The same as the total number of reads from the P-VOL and S-VOL
Mirroring	The same as the number of writes to the P-VOL	The same as the number of reads from the P-VOL
Suspended (when P-VOL has latest data)	The same as the number of writes to the P-VOL	The same as the number of reads from the P-VOL
Suspended (when S-VOL has latest data)	The same as the number of writes to the S-VOL	The same as the number of reads from the S-VOL
Blocked	Not counted	Not counted
* For writes by a server, RIOs might be divided before being issued. For this reason, this number might differ from the number of writes by a server.