Set Copy Path

This function sets copy path information between the storage systems required for performing REC using the wizard screen.

Copy path information indicates the path (copy path and the storage system where the copy path is set) used for performing REC.

Not only copy path information of the local storage system but also the information between remote storage systems can be created.

Storage Systems That Can Be Used as Remote Storage Systems

• ETERNUS DX100 S5/DX200 S5

• ETERNUS DX500 S5/DX600 S5/DX900 S5

• ETERNUS DX8100 S4/DX8900 S4

• ETERNUS DX100 S4/DX200 S4

• ETERNUS DX500 S4/DX600 S4

• ETERNUS DX100 S3/DX200 S3

• ETERNUS DX500 S3/DX600 S3

• ETERNUS DX8100 S3/DX8700 S3/DX8900 S3

• ETERNUS AF150 S3/AF250 S3

• ETERNUS AF650 S3

• ETERNUS AF250 S2

• ETERNUS AF650 S2

• ETERNUS AF250

• ETERNUS AF650

• ETERNUS DX200F

• ETERNUS DX90 S2

• ETERNUS DX410 S2/DX440 S2

• ETERNUS DX8100 S2/DX8700 S2

• ETERNUS DX90

• ETERNUS DX410/DX440/DX8100/DX8400/DX8700

• ETERNUS4000/ETERNUS8000

• ETERNUS6000

The Maximum Number of Remote Storage Systems, Paths, and Ports

• Up to 16 remote storage systems can be connected from one storage system.

• Up to 8 copy paths can be created between a pair of storage systems.

• Up to 32 destination ports (FC-RA) can be connected from one port.

• Up to 16 destination ports (iSCSI-RA) can be connected from one port.

In the [Set Copy Path] function, the storage system that is used to create copy paths is referred to as "local storage system" and the storage system that is connected to is referred to as a "remote storage system".

The [Set Copy Path] function provides the following functions:

1. Register Storage System Information

2. Create Copy Path

3. Apply Copy Path

4. Save

5. Set Bandwidth Limit

6. Measure Round Trip Time

Availability of Executions in the Default Role

Refer to "User Roles and Policies" for details on the policies and roles.

In this screen, create a copy path using the wizard.

[Start] Screen

Operation Mode Selection

[Base Information Selection] Screen

Base Information Selection

[Copy Path Information File Selection] (for Creation) Screen

Copy Path Information File Selection

[Check Registered Storage System Information] Screen

Registered Storage System List

[Storage System Configuration Settings] Screen

Storage System Configuration Settings

Displayed Contents for "Port" and Number of Displayed Ports

x: CE number

y: CM number

z: CA number

v: RT number

Port Type Setting Values

[Port Settings] Screen

Port Settings

*1	:	When the port type is "iSCSI 1-Port", "iSCSI 2-Port", "iSCSI RA (for older storage system connection)", "iSCSI-RA 1-Port", or "iSCSI-RA 2-Port".
*2	:	When the port type is "FC 1-Port", "FC 2-Port" or "FC 4-Port".

[Storage System Information File Selection] Screen

Registered Storage System List

Operation Method Selection

Storage System Information File Selection

[Storage System Information Setting] Screen

Registered Storage System List

Operation Method Selection

Storage System Information Setting

[Check Registered Storage System Information] Screen

Registered Storage System List

[Copy Path Creation Storage System Selection] Screen

Storage System Connection List

A list of combinations of registered storage systems that can be connected is displayed.

[Copy Path Setting] Dialog Box

Set Copy Path

Line Setting

Setting Example of Line Speed

For the "Line Speed" field, specify the WAN bandwidth (a total of multiple lines, if used) that can be actually used for REC. For some cases such as using the bandwidth control device, the WAN bandwidth that can be used for REC is designated. In this case, specify the designated value. To control WAN bandwidth, using the bandwidth control device is required.

When using a carrier equipment with the compression function, specify the bandwidth (a total of multiple lines, if used) that can be used after compression. In the ETERNUS storage systems, data compression is unavailable. To compress data, using a carrier equipment with the compression function is required.

(Example 1): When the bandwidth control device is not used

        Line bandwidth (*2): 200 Mbit/s (All available for REC)

        The number of lines (*3): 4 (200 Mbit/s for all)

        Line speed = 200 (Mbit/s) × 4 = 800 (Mbit/s)

(Example 2): When the bandwidth control device is used

        Line bandwidth with bandwidth limit (*2): 100 Mbit/s (100 Mbit/s out of 200 Mbit/s line bandwidth is available for REC)

        The number of lines (*3): 2 (100 Mbit/s for all)

        Line speed = 100 (Mbit/s) × 2 = 200 (Mbit/s)

(Example 3): When the line device has no compression function

        Line bandwidth (*2): 200 Mbit/s (All available for REC)

        The number of lines (*3): 2 (200 Mbit/s for all)

        Compression ratio: 0 (%) (No compression)

        Line speed = 200 (Mbit/s) × 2 ÷ (1 - 0 (%)) = 400 (Mbit/s)

(Example 4): When the line device has the compression function

        Line bandwidth (*2): 200 Mbit/s (All available for REC)

        The number of lines (*3): 2 (200 Mbit/s for all)

        Compression ratio: 20 (%) (20% for all)

        Line speed = 200 (Mbit/s) × 2 ÷ (1 - 20 (%)) = 500 (Mbit/s)

*2	:	The line bandwidth that the user has signed up to be used for REC
*3	:	The number of lines that the user has signed up to be used for REC

Path Settings

[Download File] Screen

Export Copy Path Information

[Copy Path Information File Selection] (for Applying) Screen

Copy Path Information File Selection

[Storage System Connection List] Screen

Local Storage System Information

Remote Storage System Information

Specification for Applying Result

*1	:	The comparison result between "created path information" and "path information in the storage system" is displayed.
*2	:	If the path information file is applied to the storage system under this condition, the contents of the path information in the storage system and the backup path file do not match.

Display Example of an Applying Result and an Actual Applying Result

*1	:	When the copy path information file is applied to the storage system, a backup path file is created. The backup path file can be downloaded by using the [Export All Copy Path] function.
*2	:	The copy path information file that is saved in the setting PC by clicking the [Save] button in this function.

[Check Copy Path Information Setting] Dialog Box

Copy Path Information

Line Setting

[Set Bandwidth Limit] Screen

Remote Storage System Information

[Set REC Bandwidth Limit] Screen

Storage System Information

Bandwidth Limit Settings

Advanced Copy Path

[Measure Round Trip Time] Screen

Remote Storage System Information

[Measure Round Trip Time Result] Screen

Remote Storage System Information

Function Button

Operation Mode Selection

Select the operation mode.

1. Click [Set Copy Path] in [Action].

   → The [Start] Screen appears.

2. Select the operation mode and click the [Next >>] button.

   Displayed screen varies depending on the selected operation mode.

   • When "Create Copy Path" is selected

     → The [Base Information Selection] Screen appears. Proceed to "Register Storage System Information".

   • When "Apply Copy Path" is selected

     → The [Copy Path Information File Selection] (for Applying) Screen appears. Proceed to "Select Copy Path Information".

Register Storage System Information

Register information of the storage system to create a copy path.

1. Select a storage system information registration method and click the [Next >>] button.

   The displayed screen varies depending on the selected method.

   • When "Backup Path File" is selected

     → The [Check Registered Storage System Information] Screen appears. Proceed to Step 3.

   • When "Path File" is selected

     → The [Copy Path Information File Selection] (for Creation) Screen appears. Proceed to Step 2.

   • When "Not use" is selected

     → The [Storage System Information File Selection] Screen appears. Proceed to Step 7.

2. Specify the storage location of the copy path information file that is to be used and click the [Next >>] button.

   → The [Check Registered Storage System Information] Screen appears.

3. Select a storage system to register the information (multiple selections can be made) and click the [Next >>] button.

   → A confirmation screen appears.

4. Click the [OK] button.

   → The [Storage System Configuration Settings] Screen appears.

   Note

   • When no storage system to register the information is selected, the [Storage System Information File Selection] Screen appears. Proceed to Step 7.

5. Perform the RA port and CA-RA port settings and click the [Next >>] button.

   → The [Port Settings] Screen appears.

   Caution

   • Regardless whether a copy path is applied or not, set all of the RA ports or CA/RA ports.

6. Perform the port settings and click the [Next >>] button.

   The displayed screen varies depending on the port settings.

   • When a storage system for which port setting is not complete exists

     → The [Storage System Configuration Settings] Screen appears again. Proceed to Step 5.

   • When port setting is complete for all the selected storage systems

     → The [Storage System Information File Selection] Screen appears. Proceed to Step 7.

7. Select whether to use the storage system information file and click the [Next >>] button.

   The displayed screen varies depending on the selected operation method.

   • When "Finish of registration by file reading" is selected

     → The [Storage System Information Setting] Screen appears. Proceed to Step 8.

   • When "Registration from file" is selected

     → The [Storage System Configuration Settings] Screen appears. Proceed to Step 5.

8. Register the storage system information. Select whether to continue the storage system information registration and click the [Next >>] button.

   The displayed screen varies depending on the selected operation method.

   • When "Registration by manual operation" is selected

     → The [Storage System Configuration Settings] Screen appears. Proceed to Step 5.

   • When "Finish of registration by manual operation" is selected

     → The [Check Registered Storage System Information] Screen appears. Proceed to Step 9.

9. Check the storage system information and click the [Next >>] button.

   → The [Copy Path Creation Storage System Selection] Screen appears. Proceed to "Create Copy Path".

Create Copy Path

In this screen, create the copy path. Specify the Box ID of the storage system to create the copy path, and then set the line information between the storage systems.

1. Click the [Remote Storage System Box ID] link to create a copy path.

   → The [Copy Path Setting] Dialog Box appears.

2. Specify the copy path and click the [OK] button.

   → The [Copy Path Creation Storage System Selection] Screen appears.

3. Repeat Step 1 and Step 2 the same number of times as the number of storage systems to set copy paths.

4. When setting a copy path is complete for all the storage systems, click the [Next >>] button.

   → The [Storage System Connection List] Screen appears. Proceed to "Apply Copy Path".

   Caution

   • An error screen appears in the following conditions:

     • The number of remote storage systems exceeds the maximum

     • The number of paths per port exceeds the maximum

   Note

   • Click the [Box ID] link in the [Storage System Connection List] Screen to display the [Check Copy Path Information Setting] Dialog Box. Confirm the path information that is to be applied to the storage system.

   • If a path with the normal state exists, the [Skip] button is displayed. Click the button to display the [Download File] Screen. Proceed to "Save".

Select Copy Path Information

Select the copy path information file that is to be used.

1. Specify the storage location of the copy path information file that is to be used and click the [Next >>] button.

   → The [Storage System Connection List] Screen appears. Proceed to "Apply Copy Path".

   Note

   • Click the [Box ID] link in the [Storage System Connection List] Screen to display the [Check Copy Path Information Setting] Dialog Box. Confirm the path information that is to be applied to the storage system.

Apply Copy Path

In this screen, apply the copy path information.

1. Confirm that the copy path has been set between the storage systems and click the [Next >>] button.

   → A confirmation screen appears.

   Note

   • When no paths that can be applied to the storage system exist, the [Download File] Screen appears. Proceed to "Save".

2. Click the [OK] button.

   → Application of the copy path information starts. After application is complete, the [Result of applying] screen appears.

   Caution

   • If one of the following information does not match the local storage system configuration and the configuration in the copy path information file, the cause of the error is displayed in the [Result of applying] screen.

     • Port mode (when the local storage system is "CA" and the copy path information file is "RA")

     • Port type (FC, iSCSI, and iSCSI RA)

     • When the port type is "FC", the WWN information

     • When the port type is "iSCSI" or "iSCSI RA", the IP address information

     • When the port type is "iSCSI" or "iSCSI RA", the iSCSI Name information

3. Check the message and click the [Next >>] button.

   Displayed screen varies depending on the operation mode that is selected in [Start] Screen.

   • When "Create Copy Path" is selected

     → The [Download File] Screen appears. Proceed to "Save".

   • When "Apply Copy Path" is selected

     • When application of the copy path information file succeeds

       → The [Set Bandwidth Limit] Screen appears. Proceed to "Set Bandwidth Limit".

     • When application of the copy path information file fails

       → The [End Confirmation] screen appears. Click the [OK] button to display the [Finish Display] screen. Proceed to "Finish".

Save

In this screen, save the copy path information that is created in the "Create Copy Path" screen.

1. Click the [Save] button.

   → A dialog box to download the file appears.

2. Save the copy path information for each model.

   The default file name depends on the model as follows.

   • For the ETERNUS DX S5 series and the ETERNUS AF S3 series

     The default file name is "RecPath_serial number for the storage system_YYYY-MM-DD_hh-mm-ss_copy path information file number (*1).bin". (YYYY-MM-DD_hh-mm-ss: the date and time when the save screen (Step 1) is displayed.)

   • For the ETERNUS DX8000 S4 series:

     The default file name is "RecPathConvt_serial number for the storage system_YYYY-MM-DD_hh-mm-ss_copy path information file number (*1).bin". (YYYY-MM-DD_hh-mm-ss: the date and time when the save screen (Step 1) is displayed.)

   • For the ETERNUS DX S4/S3 series, AF series, and the ETERNUS DX200F (Target: V10L40 and later)

     The default file name is "RecPathConvt_serial number for the storage system_YYYY-MM-DD_hh-mm-ss_copy path information file number (*1).bin". (YYYY-MM-DD_hh-mm-ss: the date and time when the save screen (Step 1) is displayed.)

   • For the ETERNUS DX S3 series and the ETERNUS DX200F (Target: earlier than V10L40)

     The default file name is "RecPathConvtV10L30_serial number for the storage system_YYYY-MM-DD_hh-mm-ss_copy path information file number (*1).bin". (YYYY-MM-DD_hh-mm-ss: the date and time when the save screen (Step 1) is displayed.)

   • For the other models

     The default file name is "RecPathConvt_serial number for the storage system_YYYY-MM-DD_hh-mm-ss_copy path information file number (*1).bin". (YYYY-MM-DD_hh-mm-ss: the date and time when the save screen (Step 1) is displayed.)

     *1

     :

     Copy path information file numbers are assigned in ascending order according to the [Save] button on the screen. For example, "1" is assigned for the path information file, which is downloaded by clicking the first button in the list.

3. Save the copy path information files for all of the models and click the [Next >>] button.

   → If the created path information has already been applied, the [Set Bandwidth Limit] Screen appears. Proceed to "Set Bandwidth Limit".

   Caution

   • If the [Finish] button is clicked, the created copy path information file is deleted even when the copy path information files for some of the models are not saved. Make sure to save all of the copy path information files.

   Note

   • When the created copy path information has not been applied or when the [Finish] button is clicked, the [End Confirmation] screen appears. Click the [OK] button to display the [Finish Display] screen. Proceed to "Finish".

Set Bandwidth Limit

In this screen, set the bandwidth limit between the local and the remote storage systems.

1. Select the remote storage system to set the bandwidth limit, and click the [Bandwidth Limit] link.

   → The [Set REC Bandwidth Limit] Screen appears.

2. Set the detailed bandwidth limit information, and click the [Set] button.

   → A confirmation screen appears.

3. Click the [OK] button.

   → The REC bandwidth limit setting starts.

4. Click the [Done] button to return to the [Set Bandwidth Limit] screen.

5. Click the [Next >>] button to display the [Measure Round Trip Time] Screen. Proceed to "Measure Round Trip Time".

Measure Round Trip Time

In this screen, measure the round trip time between the local and the remote storage systems.

1. Select a remote storage system to measure the round trip time (multiple selections can be made) and click the [Next >>] button.

   → A confirmation screen appears.

   Note

   • If there are no remote storage systems that can measure the round trip time or when the connection type for all of the copy paths is "Direct", the [Finish Display] screen appears. Proceed to "Finish".

2. Click the [OK] button.

   → Measurement of the round trip time starts. After measurement is complete, the [Measure Round Trip Time Result] Screen appears.

3. Check the measured round trip time, and click the [Next >>] button.

   → A confirmation screen appears.

4. Click the [OK] button.

   → Setting of the round trip time starts. After completing the settings, the [Finish Display] screen appears. Proceed to "Finish".

Finish

1. Click the [Done] button to return to the [Copy Path] screen.