NEC IS015-9E - Manuals

iii 4.7.1 Logical Disk Information Display Command ................................................................................................. 172 4.7.2 Pair/Unpair Command ............................................................................................................................

Chapter 1 Data Replication Overview 1 Chapter 1 Data Replication Overview To manage an enormous amount of information accumulated in business in a unified way and promote effective and efficient utilization of the information, a high-throughput, large-capacity, and high-reliability storage system is...

Chapter 1 Data Replication Overview 2 1 1 1 . . . 2 2 2 E E E x x x a a a m m m p p p l l l e e e s s s o o o f f f A A A p p p p p p l l l y y y i i i n n n g g g D D D a a a t t t a a a R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n When you introduce Data Replication and use re...

Chapter 1 Data Replication Overview 3 The procedure for backup from a replication volume is described below. (1) During operation, the master volume (MV) and replication volume (RV) are connected. (2) Suspend the production task and separate the replication volume (RV). Resume the task after separat...

Chapter 1 Data Replication Overview 4 1 1 1 . . . 2 2 2 . . . 2 2 2 T T T e e e s s s t t t E E E n n n v v v i i i r r r o o o n n n m m m e e e n n n t t t S S S e e e t t t t t t i i i n n n g g g You can set the same environment as the production task environment easily by creating replication v...

Chapter 1 Data Replication Overview 5 1 1 1 . . . 2 2 2 . . . 3 3 3 P P P a a a r r r a a a l l l l l l e e e l l l P P P r r r o o o c c c e e e s s s s s s i i i n n n g g g o o o f f f S S S e e e a a a r r r c c c h h h O O O p p p e e e r r r a a a t t t i i i o o o n n n By creating replicatio...

Chapter 2 Data Replication 8 Chapter 2 Data Replication This chapter describes the types and state transitions of volumes that are necessary to perform operation using the Data Replication function. 2 2 2 . . . 1 1 1 V V V o o o l l l u u u m m m e e e C C C l l l a a a s s s s s s i i i f f f i i i...

Chapter 2 Data Replication 9 Figure 2-1 Example of Volume Classification Volume A1/A2/B1 : IVVolume A3 : MV (PV) of the pair A3/A4 Volume A4 : RV (dRV) of the pair A3/A4, and MV of the pair A4/B2 Volume B2 : RV (rRV) of the pair A4/B2 Disk Array A Disk Array B MV (PV) A3 RV/MV (dRV) A4 RV (rRV) B2 P...

Chapter 2 Data Replication 10 2 2 2 . . . 2 2 2 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s The replication operations include Replicate that replicates data from MV to RV, Separate that separates between MV and RV, an...

Chapter 2 Data Replication 11 2 2 2 . . . 2 2 2 . . . 3 3 3 R R R e e e s s s t t t o o o r r r e e e This operation copies data from RV to MV. It is performed to restore data from the backup volume (RV) when a failure occurs in MV. When Restore is executed, the RV contents at the point of starting ...

Chapter 2 Data Replication 12 2 2 2 . . . 3 3 3 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s a a a n n n d d d S S S t t t a a a t t t e e e T T T r r r a a a n n n s s s i i i t t t i i i o o o n n n s s s This section...

Chapter 2 Data Replication 13 2 2 2 . . . 3 3 3 . . . 1 1 1 R R R e e e p p p l l l i i i c c c a a a t t t e e e a a a n n n d d d S S S t t t a a a t t t e e e T T T r r r a a a n n n s s s i i i t t t i i i o o o n n n s s s When Replicate is performed, data copy from MV to RV starts to reflect t...

Chapter 2 Data Replication 14 2 2 2 . . . 3 3 3 . . . 2 2 2 S S S e e e p p p a a a r r r a a a t t t e e e a a a n n n d d d S S S t t t a a a t t t e e e T T T r r r a a a n n n s s s i i i t t t i i i o o o n n n s s s When Separate is performed, the difference between MV and RV at the time of ex...

Chapter 2 Data Replication 15 2 2 2 . . . 3 3 3 . . . 3 3 3 R R R e e e s s s t t t o o o r r r e e e a a a n n n d d d S S S t t t a a a t t t e e e T T T r r r a a a n n n s s s i i i t t t i i i o o o n n n s s s When Restore is performed, data copy from RV to MV starts to reflect the content of ...

Chapter 3 Replication Management 23 Chapter 3 Replication Management This chapter describes various operations of Data Replication by the Graphical User Interface (GUI). 3 3 3 . . . 1 1 1 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n M M M a a a n n n a a a g g g e e e m m m e e ...

Chapter 3 Replication Management 26 3 3 3 . . . 1 1 1 . . . 3 3 3 N N N o o o t t t e e e s s s o o o n n n O O O p p p e e e r r r a a a t t t i i i o o o n n n Note the following points when operating replication management: [System Parameter Setting (on UNIX)] For more information, refer to the “...

Chapter 3 Replication Management 27 3 3 3 . . . 2 2 2 E E E x x x p p p l l l a a a n n n a a a t t t i i i o o o n n n o o o f f f R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n S S S c c c r r r e e e e e e n n n To perform an operation, select the volumes you want to perform th...

Chapter 3 Replication Management 28 3 3 3 . . . 2 2 2 . . . 2 2 2 C C C o o o n n n f f f i i i g g g u u u r r r a a a t t t i i i o o o n n n D D D i i i s s s p p p l l l a a a y y y A A A r r r e e e a a a The configuration display area is under the monitoring by the iSM and displays the list an...

Chapter 3 Replication Management 29 Disk Array icon Icon Description , , , etc. (in colors) Indicates that the disk array is normally operating. Indicates that the license capacity of the DynamicDataReplication, RemoteDataReplication, or RemoteDataReplication/DisasterRecovery is insufficient. * If l...

Chapter 3 Replication Management 30 license • Unmanaged disk arrays 3 3 3 . . . 2 2 2 . . . 3 3 3 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n I I I n n n f f f o o o r r r m m m a a a t t t i i i o o o n n n S S S c c c r r r e e e e e e n n n When click the [Replication Inform...

Chapter 3 Replication Management 38 Figure 3-5 shows an example of two disk arrays connected to Disk Array 1 for using RDR. The following shows an example of 3000/4000 series. Figure 3-5 Replication Link Information Disk Array 1 Disk Array 2 Disk Array 3 #00h #01h LINK Number Replication Director #0...

Chapter 3 Replication Management 46 ALL : All volumes become selectable objects. LD Set Name : Volumes registered in the selected LD Set become selectable objects. Undefined : Volumes not registered in the LD Set become selectable objects. (v) Logical Disk Select the Logical Disk which you want to s...

Chapter 3 Replication Management 48 [Execution Conditions] To Pair setting or Unpair, the following conditions must be satisfied. Conditions for Pair setting Volumes in which the pair setting is performed must satisfy the following conditions. (i) The volume capacities of MV and RV match. (ii) The s...

Chapter 3 Replication Management 49 RV unmounted by the ReplicationControl function from a business server or backup server of Windows may be set in the Not Ready state. In this case, even if the synchronous state of the pair is “separated”, the RV mode is kept in the Not Ready state. Make sure to c...

Chapter 3 Replication Management 53 (vi) The activity state of the pair of the specified MV and the paired upper MV is not in the Restore state. (vii) The activity state of the pair of the specified RV and the paired lower RV is not in the Restore state. (viii) The disk array where the specified MV ...

Chapter 3 Replication Management 58 3 3 3 . . . 3 3 3 . . . 4 4 4 R R R e e e s s s t t t o o o r r r e e e When you perform Restore for volumes with the pair setting, copy from RV to MV starts. [Operation Procedure] Do one of the following to display the Restore screen. • Select a volume in the Rep...

Chapter 3 Replication Management 63 3 3 3 . . . 3 3 3 . . . 5 5 5 S S S u u u s s s p p p e e e n n n d d d / / / R R R e e e s s s u u u m m m e e e C C C o o o p p p y y y You can suspend and resume copy operation in the Replicate or Restore state. [Operation Procedure] Suspend Copy The Foreground...

Chapter 3 Replication Management 64 (i) Selected Volume List Displays the list of the pair (MV/RV) information selected in the Replication Information screen. Volumes whose Execution Result is “Unexecutable” cannot be selected because they do not satisfy the execution conditions. For the “Unexecutab...

Chapter 3 Replication Management 67 [Execution Conditions] To perform operations of suspending/resuming copy, the following conditions must be satisfied. (i) The target MV is recognized by Replication Management as the Replication target disk. (ii) The target MV and RV are paired. (iii) The activity...

Chapter 3 Replication Management 70 Figure 3-28 illustrates the execution conditions of changes to Background Copy. (Each of (i) to (vi) in the figure corresponds to the respective number above.) Figure 3-28 Execution Conditions of Change to Background Copy Target Pair MV RV (i) Replication Target D...

Chapter 3 Replication Management 76 Figure 3-34 is displayed when MV is not under the iSM. Figure 3-35 is displayed when RV is not under the iSM. After execution, perform Forced Separate for MV or RV not separated. Figure 3-34 Warning Screen for MV without under iSM Figure 3-35 Warning Screen for RV...

Chapter 3 Replication Management 80 If Forced Unpair is performed for either MV or RV, the replication operations will not function properly because inconsistency occurs in the recognized states of MV and RV. In this case, perform Forced Unpair for MV or RV for which Unpair is not performed. Figure ...

Chapter 3 Replication Management 81 [Execution Conditions] To perform Forced Unpair, the following conditions must be satisfied. (i) The target volume is recognized by Replication Management as the Replication target disk. (ii) The target MV and RV are paired, or one of them is forcibly unpaired. (i...

Chapter 3 Replication Management 83 [Execution Conditions] To perform Freeze/Defreeze, the following conditions must be satisfied. (i) The target disk array is recognized by Replication Management. (ii) The specified disk array is monitored. When you perform Freeze, no replication operations can be ...

Chapter 3 Replication Management 88 [Differential Quantity of Volume/Transfer Rate] Displays the amount of difference and transfer rate during copy operation. The unit of the amount of difference is variable (e.g. KB, MB, GB), and the unit of transfer rate is fixed (MB/S). Example of Display (Replic...

Chapter 3 Replication Management 89 In the pair connected by RemoteDataReplication, the remote disk array is not managed by iSM or, in a monitoring stop, may be displayed like the above. In the pair connected by RemoteDataReplication, when Remote Volume cannot be recognized from the host computer wh...

Chapter 3 Replication Management 90 Example of Display 2: Separate during Replicate Replicate Execution Separate Execution Separate is complete. [Others] You can perform the replication operations by right-clicking the volume in the Connection screen. For how to operate, refer to the items in 3.3. T...

Chapter 3 Replication Management 91 3 3 3 . . . 3 3 3 . . . 1 1 1 3 3 3 C C C S S S V V V O O O u u u t t t p p p u u u t t t o o o f f f I I I n n n f f f o o o r r r m m m a a a t t t i i i o o o n n n L L L i i i s s s t t t D D D i i i s s s p p p l l l a a a y y y The replication information, t...

Chapter 3 Replication Management 92 [CSV File Containing Information Display List] This section shows an example of the CSV file that is created by executing the CSV output of information display list. In this file, the information displayed on the screen is written in the format in which each item ...

Chapter 3 Replication Management 93 3 3 3 . . . 3 3 3 . . . 1 1 1 4 4 4 S S S a a a v v v e e e P P P a a a i i i r r r S S S e e e t t t t t t i i i n n n g g g I I I n n n f f f o o o r r r m m m a a a t t t i i i o o o n n n This function saves the pair setting information for the selected disk a...

Chapter 3 Replication Management 94 Table 3-3 Pair List Format Rules Item Number Syntax Description 1 Pair Name List Identifier of this file. A space between characters is a half size. 2 MV DiskArrayName Name of the disk array where the Master Volume (MV) belongs. The maximum number of characters is...

Chapter 3 Replication Management 95 3 3 3 . . . 3 3 3 . . . 1 1 1 5 5 5 E E E n n n v v v i i i r r r o o o n n n m m m e e e n n n t t t S S S e e e t t t t t t i i i n n n g g g The interval to obtain disk array information is specified. It is the interval to obtain copy progress information in th...

Chapter 4 Functions of ReplicationControl 103 Chapter 4 Functions of ReplicationControl This chapter describes how to operate functions of the ReplicationControl that runs on the business server. The ReplicationControl functions include the creation and display of the volume list, replication operat...

Chapter 4 Functions of ReplicationControl 105 4 4 4 . . . 2 2 2 O O O p p p e e e r r r a a a t t t i i i o o o n n n T T T y y y p p p e e e s s s To use ReplicationControl, the following operations can be selected. y Direct operation for a disk array This operation performs via FC directly a volum...

Chapter 4 Functions of ReplicationControl 107 AccessControl Business Server Backup Server ReplicationControl ReplicationControl Volume List Volume List MV MV RV RV FC Connection FC Connection Figure 4-1 Direct Operation to MV or RV Volumes y A volume (control volume) is prepared to issue an I/O to a...

Chapter 4 Functions of ReplicationControl 108 Control Volume Business Server Backup Server ReplicationControl ReplicationControl Volume List Volume List FC Connection FC Connection AccessControl MV MV RV RV Figure 4-2 Operation Using a Control Volume In the ReplicationControl environment setting, yo...

Chapter 4 Functions of ReplicationControl 110 [Notes on Operation] For operations linked with the iSM, pay attention to the following. y In the operations linked with the iSM, replication is operated in the asynchronous state with operations. To perform replication operation linked with operations, ...

Chapter 4 Functions of ReplicationControl 112 4 4 4 . . . 4 4 4 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n O O O p p p e e e r r r a a a t t t i i i o o o n n n F F F i i i l l l e e e To perform the batch setting of multiple pairs by executing replication and pair operation c...

Chapter 4 Functions of ReplicationControl 115 -ad option: Displays information only associated with a specified drive name or a path name of the NTFS folder. -ap option: Displays information only associated with specified logical disk numbers. -av option: Displays information only associated with sp...

Chapter 4 Functions of ReplicationControl 118 Disk Array disk_array_number Volume Information volume_number Description X.X.XXX: Version information on the executed iSMvollist command YYYY/MM/DD HH:MM:SS: Execution date of the iSMvollist command disk_array_name: Disk array name number: Number of log...

Chapter 4 Functions of ReplicationControl 121 Description ldn: Logical disk number ld_name: Logical disk name vaa: VAA (Volume Absolute Address) type: OS type special_file_name: Special file name disk_array_name: Disk array name path: Whether to use a special file Usually this field is blank and not...

Chapter 4 Functions of ReplicationControl 127 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 1 1 1 S S S t t t a a a r r r t t t i i i n n n g g g / / / T T T e e e r r r m m m i i i n n n a a a t t t i i i n n n g g g V V V o o o l l l u u u m m m e e e L L L i i i s s s t t t D D D i i i s s s p p p l l l a ...

Chapter 4 Functions of ReplicationControl 128 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 2 2 2 S S S e e e l l l e e e c c c t t t i i i n n n g g g D D D i i i s s s k k k A A A r r r r r r a a a y y y N N N a a a m m m e e e Click the pull-down button of disk array Selection Combo box on the screen of Vo...

Chapter 4 Functions of ReplicationControl 129 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 3 3 3 C C C r r r e e e a a a t t t e e e / / / U U U p p p d d d a a a t t t e e e t t t h h h e e e V V V o o o l l l u u u m m m e e e L L L i i i s s s t t t To update the Volume List, select [File] and then select...

Chapter 4 Functions of ReplicationControl 130 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 4 4 4 C C C S S S V V V O O O u u u t t t p p p u u u t t t o o o f f f I I I n n n f f f o o o r r r m m m a a a t t t i i i o o o n n n L L L i i i s s s t t t The information displayed on the Volume List Display scr...

Chapter 4 Functions of ReplicationControl 133 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 6 6 6 V V V i i i e e e w w w / / / H H H i i i d d d e e e T T T o o o o o o l l l b b b a a a r r r To select whether to view or hide the toolbar, specify [View] → [Toolbar] on the Volume List Display screen. View Fi...

Chapter 4 Functions of ReplicationControl 134 4 4 4 . . . 5 5 5 . . . 3 3 3 . . . 8 8 8 U U U p p p d d d a a a t t t i i i n n n g g g D D D i i i s s s p p p l l l a a a y y y I I I n n n f f f o o o r r r m m m a a a t t t i i i o o o n n n To update the information of the Volume List file, selec...

Chapter 4 Functions of ReplicationControl 136 Figure 4-19 Register Control Volume Figure 4-20 Change Control Volume

Chapter 4 Functions of ReplicationControl 137 When you try to change a control volume that has already been registered in [Candidate Volume List], the following confirmation screen appears. To change the control volume to the logical disk selected from [Selected Volume List], click the [Yes] button....

Chapter 4 Functions of ReplicationControl 138 (3) When you click the [OK] button on the Define Control Volume screen, the message for confirming whether to save the definition information appears. Figure 4-23 Save Confirmation Screen of Define Control Volume Screen When you click the [Yes] button fo...

Chapter 4 Functions of ReplicationControl 139 Figure 4-25 Cancel Confirmation Screen of Define Control Volume Screen (4) Update the volume list to reflect the updated definition information to the volume list. Select [File] → [Create/Update Volume List] from the Volume List Display screen to create ...

Chapter 4 Functions of ReplicationControl 140 4 4 4 . . . 6 6 6 R R R e e e p p p l l l i i i c c c a a a t t t i i i o o o n n n O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s Replication operation commands provide a function to operate volumes by using disk array’s Data Replication fu...

Chapter 4 Functions of ReplicationControl 142 [Displayed Information] The iSMrc_replicate command displays messages when Replicate starts, during execution, and when Replicate ends. On the Windows system [Start message] Replicate Start YYYY/MM/DD hh:mm:ss MV:disk_number ld_name type volume_name path...

Chapter 4 Functions of ReplicationControl 143 On the UNIX system [Start message] Replicate Start YYYY/MM/DD hh:mm:ss MV:special_file_name ld_name type RV:special_file_name ld_name type [Execution message] Replicating..... [End message] Replicate Normal End YYYY/MM/DD hh:mm:ss MV:special_file_name ld...

Chapter 4 Functions of ReplicationControl 144 (ix) The Activity State of the pair of the specified MV and the paired upper MV is not in the Restore state. (x) The Activity State of the pair of the specified RV and the paired lower RV is not in the Restore state. (xi) The Semi-synchronous Copy mode c...

Chapter 4 Functions of ReplicationControl 145 Figure 4-26 Execution Conditions of Replicate Target Pair MV RV (vii) Not in the Restore State RV MV Target Pair RV MV RV MV (ix) Not in the Restore State (x) Not in the Restore State (i) Pair setting (ii) MV or RV has been registered in the volume list....

Chapter 4 Functions of ReplicationControl 150 (ix) When an LVM volume group or a VxVM disk group is specified, the target volume group or disk group must be active (UNIX only). (x) When specifying the combination of an LVM volume group or a VxVM disk group with a special file name (logical disk name...

Chapter 4 Functions of ReplicationControl 152 (3) Specifying the Copy Control state (-cpmode) You can specify the Copy Control state in Restore Execution and the Synchronous state. y Synchronous Copy (-cpmode sync) Changes the Copy Control state to the Synchronous Copy mode. y Semi-synchronous Copy ...

Chapter 4 Functions of ReplicationControl 153 y RV protection specified (-mode protect) Performs Restore without reflecting the updated data of the MV into the RV. When Restore is completed and the Synchronous State is placed, Separate is automatically executed and then the state changes to Separate...

Chapter 4 Functions of ReplicationControl 155 [Execution Conditions] To perform Restore, the following conditions must be satisfied. (i) The target MV and RV are paired. (ii) The target MV or RV has been registered in the volume list. (iii) The volume list is not being created or updated. (iv) Both ...

Chapter 4 Functions of ReplicationControl 156 Figure 4-28 illustrates the execution conditions of Restore. Figure 4-28 Execution Conditions of Restore Target Pair RV MV RV MV RV MV (x) Separated (ix) Separated Target Pair RV MV RV (viii) Separated (i) Pair setting (ii) MV or RV has been registered i...

Chapter 4 Functions of ReplicationControl 160 Figure 4-29 illustrates the execution conditions of operations regarding the Copy Control state. Figure 4-29 Execution Conditions of Copy Control State Operation Target Pair MV RV (i) Pair setting (ii) MV or RV has been registered in the volume list. (ii...

Chapter 4 Functions of ReplicationControl 162 replication operation option setting file. On the UNIX system, the default value can be specified by using the RPL_WATCHDEV environment variable. For details of each setting, refer to the “Data Replication Command Reference”. (4) Paired-volume state moni...

Chapter 4 Functions of ReplicationControl 164 [Execution Conditions] To execute the wait command, the following conditions must be satisfied: (i) The target MV and RV are paired. (ii) The target MV or RV has been registered in the volume list. (iii) The volume list is not being created or updated. (...

Chapter 4 Functions of ReplicationControl 167 Previous Active prev_state Description special_file_name: Special file name ld_name: Logical disk name type: OS type activity: Activity State sync: Paired operation state copy: Copy Control State <state> Start Time: Operation start time (<state&...

Chapter 4 Functions of ReplicationControl 168 Figure 4-31 Displaying Replication State Target Pair RV MV (i) Pair setting (ii) MV or RV has been registered in the volume list. (iii) The volume list is not being created or updated (iv) The disk is not a dynamic disk or GPT-formatted partition disk.

Chapter 4 Functions of ReplicationControl 171 Figure 4-32 shows execution conditions for displaying a specific volume name. Figure 4-32 Displaying Specific Volume Name Target (i) The target volume or the volume paired with the target volume has been registered in the volume list. (ii) The volume lis...

Chapter 4 Functions of ReplicationControl 172 4 4 4 . . . 7 7 7 P P P a a a i i i r r r S S S e e e t t t t t t i i i n n n g g g a a a n n n d d d U U U n n n p p p a a a i i i r r r O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s Pair operation commands make functions available for lis...

Chapter 4 Functions of ReplicationControl 178 4 4 4 . . . 8 8 8 D D D i i i s s s k k k A A A r r r r r r a a a y y y O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s The disk array operation command provides the function of displaying information on the replication function of a disk arr...

Chapter 4 Functions of ReplicationControl 181 4 4 4 . . . 9 9 9 D D D i i i s s s k k k O O O p p p e e e r r r a a a t t t i i i o o o n n n s s s The disk operation function, which functions only on the Windows system, enables disks to be controlled and operated so as to operate the data replicati...

Chapter 4 Functions of ReplicationControl 185 4 4 4 . . . 9 9 9 . . . 3 3 3 V V V o o o l l l u u u m m m e e e U U U n n n m m m o o o u u u n n n t t t C C C o o o m m m m m m a a a n n n d d d To unmount a volume, the iSMrc_umount command is used. The iSMrc_umount command cancels the association ...

Chapter 4 Functions of ReplicationControl 189 4 4 4 . . . 9 9 9 . . . 5 5 5 D D D e e e v v v i i i c c c e e e s s s S S S c c c a a a n n n C C C o o o m m m m m m a a a n n n d d d To scan devices, the iSMrc_scan command is used. Executing the iSMrc_scan command scans devices and lets the system ...

190 Index A abnormal suspend ........................................................ 21 activity state .......................................................... 16, 32 B background copy ................................................... 17, 68 background copy level ..................................

191 I I/O issuing path ......................................................... 108 interval to obtain disk array information ..................... 95 iSMrc_arrayinfo ........................................................ 106 iSMrc_change ............................................ 104, 106, 157...