The mirror management console is provided only for the individual mirror resources managed by MCCS.
The mirror management console operates independently from the engine logic of MCCS, so during operation, it can collide with MCCS.
The mirror management console informs users of the mirror volume status and the capacity of the mirror in use. You can change the bandwidth and the mirror network addresses in it.

Table of Contents

Mirror Disk Console

Mirror management console

The following capture is mirror management console.

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > 1.PNG

[Figure] Mirror management console

Mirror set configuration

The mirror resource configured in MCCS is expressed as a single mirror set.

	Figure	Description
Volume		The volume condition is Source. Displays the capacity in use on the right side of the volume.
Volume		The volume condition is Target.
Status		The volume condition is Mirroring.
		The volume condition is Resyncing. Displays the progress bar for resyncing.
		The volume condition is Pause.
		There is a dirtybit in the volume.
		Split brain occurred.

Mirror management command descriptions

Right click with your mouse button on the mirror set volume to see the descriptions of the mirror management commands that can be selected.

	Menu	Description
Source	Pause copying	If you use the pause copying command, the volume condition will be changed to PAUSE and copying will be paused.
	Forceful sync	If you use the forceful sync command, the status will be changed to RESYNCING and the full synchronization will be done forcefully.
	Resume copying	Continue to copy the mirror volume that was paused. Resynchronization will take place if there is data change during temporary pause.
Target	Lock	Lock the volume to prevent access anymore.
	Unlock	When you unlock the target volume, you can see the content of the file.

When you unlock the target volume, you can see the content of the file. It can cause a negative effect to the mirror.
Even if you unlock it, you cannot write to the file. If you want to "write" to the file, you must manually change the readOnly attributes in the registry.

Descriptions of properties setting

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > 2.PNG

[Figure] Mirror disk properties

Attribute name	Description
JOB ID	JOB ID is displayed.
Bit Map	It is the directory containing the intent log.
Compression level	It represents the compression level for a specific copy set. The setting range is from 0 to 9. ‘0’ means no compression. The greater the value is, the smaller bandwidth is used to transmit greater data. But also, it uses more of the CPU resources. Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.
Empty async queue	Even if a driver receives a request for deleting a queue, this function can be used to prevent deletion of queues on a specific volume.
Bandwidth	It is the max network bandwidth (kbps/sec) that can be used by a copy set. ‘0’ means that the given bandwidth will be used with maximum efficiency.
Mirror network address	IP address of data replication between nodes in a cluster.

※ Mirror IP address is able to be edited. But this can be done when mirror state is paused.
네트워크 주소 변경 완료 후, 복재 재개를 위해서 미러 재 동기 작업이 필요합니다.

SDR console

Shared disk DR management console

Shared disk DR management console is as follows.

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > sdr_h.PNG
[Figure] Shared Disk DR Management Screen

Node access status

It represents the status of node accessing the shared disk.
MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > SDRNode.PNG

[figure] Shared disk DR node access status

Figure	Description
	Both nodes accessing the volume
	Active1 node accessing the volume
	StandBy1 node accessing the volume
	Neither of nodes accessing the volume

Mirror set configuration

The shared disk DR resource configured in MCCS is expressed as a single mirror set.

	Figure	Descriptions
Volume		Volume in the SOURCE condition The capacity in use is displayed on the right side of the volume.
Volume		The volume in the TARGET condition.
Status		The volume in the MIRRORING condition.
		Volume in the RESYNCING condition The progress bar is displayed during RESYNCING .
		The volume in pause condition
		Dirtybit occurred in the volume
		split-brain occurred
		DR volume condition in NONE

Descriptions for shared disk DR management command

Right click with your mouse button on the mirror set volume in mirror volume to see the descriptions of the mirror management commands that can be selected.

	Menu	Descriptions
Source	Pausing Copy	If you command the pausing copy, the volume condition will be changed to pause and copying will be paused.
	Forceful Sync	If you use the forceful sync command, the status will be changed to RESYNCING and the full synchronization will be done forcefully.
	Resuming Copy	Resume to copy the mirror volume that was paused. Resynchronization takes place if data is changed during temporary pause.
Target	Lock	Lock the volume to prevent access anymore.
	Unlock	Unlock the target volume to see the content of the file.

Unlock the target volume to see the content of the file. It can cause a negative effect to the mirror.
Even if you unlock it, you cannot write to the file. If you want to "write" to the file, you must manually change the readOnly attributes in the registry.

Descriptions for shared disk DR property configuration

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > SDRProp.png
[Figure] Shared Disk DR Management Screen

Attribute name	Descriptions
JOB ID	JOB ID is displayed.
MirrorEndPoints	Shows the information of all jobs defined in the mirror. (Node name, Letter, MirrorIP, Sync type)
Compression level	It represents the compression level for a specific copy set. The setting range is from 0 to 9. ‘0’ means no compression. The greater the value is, the smaller bandwidth is used to transmit greater data. But also, it uses more of the CPU resources. Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.
Empty Async Queue	It prevents deletion of queues on a specific volume even if a driver receives a request for deleting a queue.
Bandwidth	It represents the max network bandwidth (kbps/sec) that can be used by a copy set. ‘0’ means that the given bandwidth will be used with maximum efficiency.
Mirror network address	It copies the volume to the set IP address.

MDR console

Mirror disk DR management console

Mirror disk DR management console is as follows.

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > MDRManager.PNG

[Figure] Mirror disk DR console.

Mirror disk set

Mirror disk resource in a cluster is expressed as an MirrorSet.

	Figure	Description
Volume		The volume role is Source. Displays the capacity in use on the right side of the volume.
Volume		The volume role is Target.
Status		The volume status is Mirroring.
		The volume status is Resyncing. Displays the progress for resyncing.
		The volume status is Pause.
		There is a dirtybit in the volume.
		Split brain is occurred.

미러 디스크 DR 관리 명령 설명

미러 볼륨의 미러 셋의 볼륨 우측 클릭 시 선택 가능한 미러 관리 명령 들에 대해 설명합니다.

	메뉴	설명
소스	복제 일시 중지	복제 일시 중지 명령시 볼륨 상태가 PAUSE 상태로 변경 되며 복제가 일시 중지 됩니다.
	강제 동기	강제 동기 명령시 RESYNCING 상태로 변경 되며 강제로 전체 동기화를 진행합니다.
	복제 재개	일시 중지된 미러 볼륨의 복제 작업을 재개 합니다. 일시 중지 중에 데이터 변동이 일어 났다면 재동기 작업이 발생합니다.
타겟	잠금	볼륨을 잠궈 더이상 접근 할 수 없게 됩니다.
타겟	잠금 해제	대상 볼륨의 잠금을 해제 하여 파일 시스템의 내용을 볼 수 있도록 합니다.

Target 볼륨 잠금 해제시 파일 시스템의 내용을 볼 수 있도록 합니다. 이로 인해 미러에 부정적인 영향을 줄 수 있습니다.
락(lock)을 해제해도 파일에 쓰기 작업은 수행 할 수 없습니다. "쓰기" 작업을 수행하기 위해서는 레지스트리의 readOnly 속성을 수동으로 수정해야 합니다.

속성 설정 설명

MCCS 4.2 English Online Help > Appendix H. Mirror Management Console > MDR_properties.PNG

[그림] 속성 설정 화면

속성명	설명
JOB ID	JOB ID 를 나타냅니다.
MirrorEndPoints	미러에 정의된 모든 job에 대한 정보를 보여줍니다. ( 노드이름, Letter , MirrorIP, 동기화 타입)
압축 레벨	특정 복제 셋에 대한 압축레벨을 나타냅니다. 설정할 수 있는 값은 0~9 까지 입니다. ‘0’는 압축하지 않는다는 의미입니다. 값이 크면 클수록 낮은 대역폭으로 많은 데이터를 전송할 수 있지만 CPU 의 자원을 더 많이 사용합니다. 따라서 시스템의 CPU 사용율과 네트워크의 대역폭을 적절히 균형을 맞춰 최대 효율을 낼 수 있는 압축레벨을 설정하는 것이 바람직합니다.
비동기 큐 비움	드라이버가 큐 삭제 요청을 받더라도 특정 볼륨에 대해서는 큐를 삭제 하지 않도록 설정 하는 것입니다.
대역폭	복제 셋이 사용할 수 있는 네트워크 대역폭(kbps/sec)의 최대치를 나타냅니다. ‘0’은 주어진 대역폭을 최대로 사용하겠다는 의미입니다.
미러 네트워크 주소	설정된 IP로 볼륨을 복제합니다.

※ 미러 네트워크 주소는 속성 설정 화면에서 변경할 수 있습니다.

단, 복제가 일시 중지된 상태에서만 변경할 수 있으며, 이는 미러 관리 화면에서 할 수 있습니다.
네트워크 주소 변경 완료 후, 복재 재개를 위해서 미러 재 동기 작업이 필요합니다.