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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.

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Mirror Disk Console

Mirror disk management console

The following capture screen is mirror disk management console.

[Figure] Mirror disk management console

Mirror

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disk Status

Mirror console show mirroring status as follows.

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

Mirror management command descriptions

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	Menu	Description
Source	Pause copyingIf you use the pause copying command, the volume condition	The mirror status will be changed to PAUSE and copying replication will be paused.
	Forceful sync	If you use the forceful sync command, the Resync	The mirror status will be changed to RESYNCING and the full synchronization will be done forcefullyinitiated between node.
	Resume copying	Continue to copy Resume MIRRORING the mirror volume that disk which was paused. Resynchronization will take place in advance, if there is data change during temporary pausepaused.
Target	Lock	Lock the The volume is locked to prevent access anymorethe volume from the node.
	Unlock	When you unlock Unlock the target volume , you can see the content of the file. to access read only purpose. Mirror status should be paused in advance.

Warning
When you unlock the target volume, you can see the content of the fileaccess the volume read only purpose. It can cause a negative effect to the mirror. Even if you unlock it, you cannot write to the filedisk. If you want to "write" to the filedisk, you must manually change the readOnly attributes in the registry. But it does not highly recommended to secure data integrity.

Descriptions of properties setting

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Attribute name	Description
JOB ID	JOB ID is displayed.
Bit Map	It is the directory containing the of intent log.
Compression level	It represents the compression level for a specific copy mirror set. The setting level 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, value transfer more data in a smaller bandwidth, but it uses more CPU resource of the CPU resourcesnode. Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.
Empty Flush 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 IP 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. If mirror status is MIRRORING when you edit the mirror IP address, the status changed to PAUSE automatically. Select the resume from mirror menu to resume the mirroring after done this.

SDR console

Shared disk DR management console

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

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

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Mirror disk DR management

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	Menu	Descriptions
Source	Pausing Copy	If you command the pausing copy, the volume condition Pause	The mirror status will be changed to pause PAUSE and copying replication will be paused.
	Forceful Sync	If you use the forceful sync command, the Resync	The mirror status will be changed to RESYNCING and the full synchronization will be done forcefullyinitiated between node.
	Resuming CopyResume	Resume to copy MIRRORING the mirror volume that disk which was paused. Resynchronization takes will take place in advance, if there is data is changed change during temporary pausepaused.
Target	Lock	Lock the The volume is locked to prevent access anymorethe volume from the node.
	Unlock	Unlock the target volume to see the content of the fileaccess read only purpose. Mirror status should be paused in advance.

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

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But it does not highly recommended to secure data integrity.

Shared disk DR Properties

[Figure] Shared Disk DR Management ScreenProperties

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 typeMirror mode)
Compression level	It represents the compression level for a specific copy mirror set. The setting level 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, value transfer more data in a smaller bandwidth, but it uses more CPU resource of the CPU resourcesnode. Thus, by properly balancing the system CPU usage and the network bandwidth, select the proper compression level that can maximize the efficiency.
Empty Flush Async Queue	It prevents deletion of queues on a specific volume even 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 represents 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 IP address	It copies the volume to the set IP address of data replication between a cluster and an offisite DR.

MDR console

Mirror disk DR management console

미러 디스크 DR 관리 화면은 다음과 같습니다Mirror disk DR management console is as follows.

[그림Figure] 미러 디스크 DR 관리 화면 Mirror disk DR console.

미러 셋 구성

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Mirror disk set

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

상태

	그림Figure	설명Description
볼륨Volume		볼륨 상태가 SOURCE 상태 볼륨의 오른쪽에는 사용중인 용량이 표시됩니다The volume role is Source. Displays the capacity in use on the right side of the volume.
볼륨Volume		볼륨 상태가 TARGET상태	The volume role of offiste DR is Target.
Status	볼륨의 상태가 MIRRORING 상태	The volume status is Mirroring.
	볼륨의 상태가 RESYNCING 상태 RESYNCING 진행 시 상태 바가 표시됩니다	The volume status is Resyncing. Displays the progress for resyncing.
	볼륨 상태가 PAUSE 상태	The volume status is Pause.
	볼륨에 dirtybit 발생	There is a dirtybit in the volume.
		split-brain 발생 상태Split brain is occurred.

미러 디스크 DR 관리 명령 설명

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Mirror disk DR management menu

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.

	메뉴menu	설명description
소스Source	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.

Warning
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

Image Removed

[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.

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Pause	The mirror status will be changed to PAUSE and replication will be paused.
Resync	The mirror status will be changed to RESYNCING and the full synchronization will be initiated between node.
Resume	Resume MIRRORING the mirror disk which was paused. Resynchronization will take place in advance, if there is data change during paused.
Target	Lock	The volume is locked to prevent access the volume from the node.
Target	Unlock	Unlock the target volume to access read only purpose. Mirror status should be paused in advance.

Warning
When you unlock the target volume, you can access the volume read only purpose. It can cause a negative effect to the mirror. Even if you unlock it, you cannot write to the disk. If you want to "write" to the disk, you must manually change the readOnly attributes in the registry. But it does not highly recommended to secure data integrity.

Mirror disk DR properties

Image Added

[Figure] Mirror disk DR properties

Attribute Name	Description
JOB ID	JOB ID is displayed.
MirrorEndPoints	Shows the information of all jobs defined in the mirror. (Node name, Letter, MirrorIP, Mirror mode)
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.
Flush 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 IP Address	IP address of data replication between a cluster and an offisite DR.

※ Mirror IP address is able to be edited. But this can be done when mirror state is paused. If mirror status is MIRRORING when you edit the mirror IP address, the status changed to PAUSE automatically. Select the resume from mirror menu to resume the mirroring after done this.

Version	Old Version 35	New Version Current
Changes made by	이진현	환기장
Saved on	2015/10/16	2015/10/22

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