ETERNUS SF AdvancedCopy Manager Operator's Guide for Tape Backup Option 13.0 -Microsoft(R) Windows(R) 2000/Microsoft(R) Windows Sever(TM) 2003-, -Solaris-, -HP-UX-, -Linux-, -AIX-

Contents Index

Chapter 1 Overview of Tape Backup of AdvancedCopy Manager

This chapter provides an overview of Tape Backup of AdvancedCopy Manager.

1.1 What is AdvancedCopy Manager?

AdvancedCopy Manager is a product that realizes storage management in an open system, and provides the following functions.

High-speed backup
High-speed replication

The high-speed backup function implements database backup without stopping transactions.
The Tape Backup of AdvancedCopy Manager enhances the high-speed backup function among above functions.

The high-speed backup function is explained below.

+High-speed backup (24-hour basis)

A hardware function [Advanced Copy Function (OPC, EC)] of Fujitsu Storage Systems ETERNUS is used to back up data fast. The Advanced Copy Function, being a fast data copy function independent of data size, can always maintain fixed backup time even if the data to be backed up increases. Thus, the backup time does not increase even if the data amount increases.
This function can drastically reduce the time in which transaction must be stopped to perform backup. If transaction uses a database or a general file system, the time that transaction is stopped is still significantly reduced.
With the remote copy function in the ETERNUS storage system , backup operations to disk array unit at remote locations is also possible.

1.2 What is Tape Backup of AdvancedCopy Manager?

1.2.1 What is Tape Backup function?

The Tape Backup function enhances the backup function of AdvancedCopy Manager as follows.

Supports tape media in addition to disks as backup media.

If you use the Tape Backup function, you can centrally manage backup histories that are backed up to disk and tape. Backup to tape is enabled by installing a dedicated server called Tape Server.

However, the replication function of AdvancedCopy Manager is not enhanced even if the Tape Server is installed.

1.2.2 What are the advantages of installing Tape Server?

If the Tape Server is installed, you can back up data to both disks and tapes. Installation of Tape Server provides the following advantages.

+Simple operation for backup to disks and tapes

You can easily execute the backup operation to disks and tapes.
Conventional backup operation to disks and tapes, based on the combination of AdvancedCopy Manager and ISV products, requires that you use AdvancedCopy Manager commands and ISV product commands in combination. Installation of Tape Server eliminates the need to use commands in complicated combinations. You can back up data to both disks and tapes by a single operation.

+Backup to tapes with minimum transaction stop duration

Backup to disks is implemented by using the hardware function [Advanced Copy Function (OPC, EC)] of Fujitsu Storage Systems ETERNUS, and backup to tapes is performed from the Advanced Copy destination (backup volume). Therefore, access to transaction volumes is suppressed for a few seconds in the same manner as when using the conventional AdvancedCopy Manager. (Transaction of database is not stopped).
However, in operation mode in which the system performs backup only to tapes, not to disks, transaction is stopped until write to tape is completed.

+Centralized management of backup history

Backup histories of data backed up to disks and tapes can be managed centrally.

+Backup without applying load to the transaction server

The Tape Server takes care of backup to tapes, applying no load to the transaction server.

+Support for multiple-platform environment

Even if the transaction servers connected to the SAN environment use different platforms, you don't need to prepare a Tape Server for each platform. One Tape Server enables backup on different platforms.

+Economizing the backup destination disk capacity

You can minimize the backup destination disk capacity even when you want to shorten the stopped period of transaction using the Advanced Copy Function. To do so, back up data to both a disk and tape and then delete the disk backup history, thereby enabling the backup destination disk to be used as a backup destination disk for another transaction volume.

1.3 Product Configuration

1.3.1 Function System

This sub-section explains the functions and elements that configure backup operation using the Tape Backup of AdvancedCopy Manager.

[Table 1.1 Functions]

Function name	Description
Manager of AdvancedCopy Manager	Operates on the Storage Management Server, and two or more Storage Servers are managed. Agent of AdvancedCopy Manager is included in this product.
Agent of AdvancedCopy Manager	Operates on the Storage Server with which the storage device is connected. This function performs backup management. This product (Agent) can be managed by Manager of AdvancedCopy Manager running on the Solaris, the Windows, or the Linux operating systems.
Tape Manager of AdvancedCopy Manager	Operates on the Tape Server with which the storage device and tape changer or tape library are connected. This function performs backup to tape or restoration from tape.
Tape Agent of AdvancedCopy Manager	Operates on the Storage Server with which the storage device is connected. This function performs backup management using disk and tape as backup media. This product is installed with the Agent of AdvancedCopy Manager but enabled when Tape Manager is installed.
ETERNUS disk array unit	Disk array unit having the Advanced Copy Function (OPC, EC).
Tape changer or tape library	Connected to the Tape Server. Tape Backup of AdvancedCopy Manager saves data to tape in the tape changer or tape library.
Web server	Provides a Web-based GUI to enable simple operation of the configuration management and TSM functions. A Web server is constructed on the Storage Management Server and Tape Server.
Web client	This is Network terminal for GUI operation.
ETERNUS SF TSM	A product used for file backup management. The Tape Server implements backup management by internally calling TSM. TSM commands are used to set up the tape changer or tape library and storage pool used by Tape Backup.

Tape Backup of AdvancedCopy Manager distinguishes Server types according to the operating mode as follows.

Storage Server
The Storage Server is a server to which a disk array unit is connected and which implements the backup functions provided by Tape backup of AdvancedCopy Manager.
The Agent and Tape Agent of AdvancedCopy Manager are installed on the Storage Server. If a Storage Server is also to be used as the Storage Management Server then the Manager, as well as the Agent, will need to be installed.
Storage Management Server
The Storage Management Server manages the Storage Servers and only one Storage Management Server can be set in the system.
The Manager of AdvancedCopy Manager is installed on the Storage Management Server.
Tape Server
The Tape Server performs management of backup to tape. One or more Tape Servers can be installed in a system. Of the backup operations executed on the Storage Server, the requests related to tape are transferred to the Tape Server and executed on it.
The Tape Manager of AdvancedCopy Manager is installed on the Tape Server.
ETERNUS SF TSM (hereafter referred to as TSM) is also installed on the Tape Server. TSM is a product used for file backup management. The Tape Server implements backup management by internally calling TSM.

The following figure shows the relationships between Servers and functions.

[Figure 1.1 Relationship between Servers and functions]

1.3.2 System Configuration

This section explains the system configuration of Tape Backup of AdvancedCopy Manager.

With the Tape Backup of AdvancedCopy Manager, a Tape Server can be configured in the operation patterns shown in the figures below. For the operation patterns of the Storage Management Server and Storage Server, see "Function system" in the "AdvancedCopy Manager Operator's Guide".
For the operation pattern criteria, see "Overview of Installation Procedure Depending on Operating Environment" in the "ETERNUS SF AdvancedCopy Manager Installation Guide for Tape backup Option".

+When the Tape Server is also operated as a Storage Management Server

The Tape Server is installed on the Storage Management Server.
The configuration is shown below.

[Figure 1.2 When the Tape Server is also operated as a Storage Management Server]

+When the Tape Server is also operated as a Storage Server

The Tape Server is installed on the Storage Server.
The configuration is shown below.

[Figure 1.3 When the Tape Server is also operated as a Storage Server]

+When the Tape Server and other Servers are independent

A configuration for management using an independent Tape Server is shown below.

[Figure 1.4 When the Tape Server and other Servers are independent]

+When two or more Tape Servers are operated

++When a tape library system is not shared

A configuration in which Tape Servers do not share a tape library system is shown below.

[Figure 1.5 When a tape library system is not shared]

++When a tape library system is shared

A configuration in which Tape Servers share a tape library system is shown below.

[Figure 1.6 When a tape library system is shared]

1.3.3 Combinations of Products

This section explains combinations of AdvancedCopy Manager products in a system environment using the Tape Backup function.

1.3.3.1 Combinations of product versions

The following table summarizes the combinations of product versions.

When the Storage Management Server or the Storage Server and the backup operation to make it use combinedly are done with the Tape Server, the version of the Tape Manager who installs it should be the same as the version of the Manager or the Agent of AdvancedCopy Manager.

+For Solaris

[Table 1.2 Combinations of product versions]

Tape Manager	Tape Agent
Tape Manager	13.0	11.0	11.0 or earlier
13.0	A	B	NA
11.0	NA	A	NA

A: Connectable
B: Connectable (However, the Tape Backup function cannot be used on the QuickOPC function and VxVM volume.)
NA: Not connectable

+For Linux

[Table 1.3 Combinations of product versions]

Tape Manager	Tape Agent
Tape Manager	13.0	11.0	11.0 or earlier
13.0	A	B	NA
11.0	NA	A	NA

A: Connectable
B: Connectable (However, the Tape Backup function cannot be used on the QuickOPC function.)
NA: Not connectable

+For HP-UX/AIX/Windows

[Table 1.4 Combinations of product versions]

Tape Manager	Tape Agent
Tape Manager	13.0	11.0	11.0 or earlier
13.0	A	NA	NA
11.0	NA	NA	NA

A: Connectable
NA: Not connectable

1.3.3.2 Combinations of Servers and platforms

The following table summarizes the combinations of Server types and supported platforms.

[Table 1.5 Combinations of Server types and platforms]

Platform	Storage Management Server	Storage Server	Tape Server
Solaris	Supported	Supported	Supported
Linux	Supported	Supported	Not Supported
Windows	Supported	Supported	Not Supported
HP	Not Supported	Supported	Not Supported
AIX	Not Supported	Supported	Not Supported

The versions of supported platforms are shown below.

Storage Management Server
For details, see "Software requirements" in the "ETERNUS SF AdvancedCopy Manager Operator's Guide" for the operating system of the target Storage Management Server.
Storage Server
For details, see "Software requirements" in the "ETERNUS SF AdvancedCopy Manager Operator's Guide" for the operating system of the target Storage Server.
Tape Server
For details, see "Installation of Tape Manager of AdvancedCopy Manager" in the " AdvancedCopy Manager Installation Guide for Tape Backup Option".

1.4 Function Overview of Tape Backup

1.4.1 Management Functions

+Tape library system management by TSM

Tape Backup of AdvancedCopy Manager automatically allocates drivers used for backup and restoration, as an extension of backup or restoration. TSM manages the allocation.

+Tape storage pool management by TSM

Tape Backup of AdvancedCopy Manager automatically allocates tape medias used for backup and restoration, as an extension of backup or restoration. TSM manages the allocation.

+Associating Storage Servers with Tape Servers

When multiple Tape Servers are installed, it is necessary to decide which backup requests should be processed on which Tape Servers. You can decide on a Tape Server for each Storage Server. This function thus manages the association between the Storage Servers that issue requests and Tape Servers that process the requests.

+Policy management

This function makes settings for the storage pool and history management.

+Storage configuration management

This function manages the configurations of volumes to be backed up and backup destination volumes.
Tape Backup of AdvancedCopy Manager calls the volumes to be backed up "transaction volumes" and the backup destination volumes "backup volumes".

1.4.2 Backup and Restoration Function

+Backup methods

The following two backup methods are supported.

Combining backup to tape media with high-speed backup to disk

High-speed backup to disk is a function for implementing high-speed backup between volumes, regardless of volume capacities, using the hardware function [Advanced Copy Function (OPC, EC)] of Fujitsu Storage Systems ETERNUS. Backup to tape media is performed from the backup destination disk. Therefore, this function can greatly reduce the time during which system service is stopped for backup. Using EC of the Advanced Copy Function enables faster backup because it supports differential copying for updates.
This backup method requires a backup destination disk.
The figure below shows the operation for backup to tape media via disk.

Backup method without using a backup disk

This method performs backup to tape media directly from a transaction volume without using the Advanced Copy Function of the ETERNUS disk array unit. Therefore, it increases the time during which transaction must be stopped for backup.
The figure below shows the operation for backup to tape.

It is also possible to copy at a later time data that has been backed up to disks to tape media.

+Restoration methods

The following two restoration methods are supported.

Restoration from disks

When backup data is stored on a disk, the hardware function [Advanced Copy Function (OPC, EC)] of Fujitsu Storage Systems ETERNUS is used for restoration. Therefore, this method can implement restoration instantaneously regardless of the size of a transaction volume.

Restoration from tape medias

When backup data is stored on tape medias, data is directly written to a transaction volume from tape medias. Therefore, restoration takes time.

+Cooperation with the transaction server

When the transaction server is active
Backup data is guaranteed by cooperation with the transaction server.
When the transaction server is stopped
Restoration from the Tape Server independent of transaction is possible. This function can be used to recover system volumes.

+Backup history management

Centralized management of backup to both disk and tape media
Backup data of transaction volumes is centrally managed as history information regardless of the backup destination media. Automatic management is also possible by setting the number of preservation generations or preservation days.
Operation for management by the number of preservation generations is referred to as "generation management backup", and operation for management by the number of preservation days is referred to as "day management backup".
In generation management backup mode, backup data is assigned a unique number called a generation number. An absolute generation is assigned uniquely to each transaction volume regardless of the media type (disk or tape). A relative generation is assigned uniquely to respective data stored on the disk or tape media.

+Progress check for operation

The progress of backup, restoration, or tape copy being executed or the result of execution can be checked.

1.4.3 Other Functions

+Support for multiple platforms with one Tape Server

Transaction volumes based on different platforms can be backed up with one Tape Server. This function eliminates the need for preparing a Tape Server for each platform.

+Load distribution with multiple Tape Servers

Installing multiple Tape Servers can distribute loads on the Tape Servers due to an increase in the number of transaction volumes.

1.5 Operating Environment of Tape Backup of AdvancedCopy Manager

1.5.1 Hardware Requirements

For details, see "Hardware Environment" in the "ETERNUS SF AdvancedCopy Manager Installation Guide for Tape Backup Option".

1.5.2 Software Requirements

For details, see "Software Environment" in the "ETERNUS SF AdvancedCopy Manager Installation Guide for Tape Backup Option".

In addition, for the software requirements of transaction server that executes the backup operation with the Tape Backup function, see "Agent of AdvancedCopy Manager" of "Software requirements" in the "AdvancedCopy Manager Operator's Guide" for the operating system of the target Storage Server.

1.6 Supported Devices of Tape Backup of AdvancedCopy Manager

For information on the devices supported by Tape Backup of AdvancedCopy Manager, see "Managing a Device on AdvancedCopy Manager" in the "AdvancedCopy Manager Operator's Guide" for the operating system of the target Storage Server.

1.6.1 Normal Devices

For information on the devices supported by Tape Backup of AdvancedCopy Manager, see "Managing a Device on AdvancedCopy Manager" in the "ETERNUS SF AdvancedCopy Manager Operator's Guide" for the operating system of the target Storage Server.

1.6.2 SDX Object of PRIMECLUSTER GDS/SynfinityDISK

PRIMECLUSTER GDS (hereinafter referred to as "GDS")/SynfinityDISK is software whose main function is mirroring disk units.
The operation modes supported by Tape Backup of AdvancedCopy Manager are as follows.

For operation in units of slices
Solaris and Linux:

/dev/sfdsk/(class name)/dsk/(volume name):(devnam-value-of-sdxinfo)

Windows:

disk class name/mirror volume:g?d?p?

Operation mode for the logical volume units is not supported.
The supported operating system is Solaris and Linux only.

1.6.3 Volumes under control of VERITAS Volume Manager (VxVM)

For details, see "Volumes under control of VERITAS Volume Manager (VxVM)" in the "ETERNUS SF AdvancedCopy Manager Operator's Guide" for the relevant operating system.

1.6.4 Volumes under control of Logical Volume Manager (LVM)

For details, see "Volumes under control of Logical Volume Manager (LVM)" in the "ETERNUS SF AdvancedCopy Manager Operator's Guide" for the relevant operating system.

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