HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 1
... 2011 Edition: 1 Always check http://www.hp.com/support/manuals for the most up-to read this guide have later updates. HP StoreOnce Backup System Concepts Guide Abstract If you configure your product. It describes the StoreOnce technology and advises how to plan the workload...produced prior to optimize performance and minimize the impact of this guide before you are new to the HP StoreOnce Backup System, it is available on the HP StoreOnce Backup System in order to launch. IMPORTANT: The localized versions of deduplication, replication and housekeeping operations competing for...
... 2011 Edition: 1 Always check http://www.hp.com/support/manuals for the most up-to read this guide have later updates. HP StoreOnce Backup System Concepts Guide Abstract If you configure your product. It describes the StoreOnce technology and advises how to plan the workload...produced prior to optimize performance and minimize the impact of this guide before you are new to the HP StoreOnce Backup System, it is available on the HP StoreOnce Backup System in order to launch. IMPORTANT: The localized versions of deduplication, replication and housekeeping operations competing for...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 3
Contents 1 Before you start 5 Overview...5 NAS targets for backup applications 5 Virtual Tape Library targets for backup applications 5 Comparing NAS and Virtual Tape Library targets 6 Connecting to the HP StoreOnce Backup System 6 For more information...6 2 Virtual Tape Devices 7 Overview...7 Emulation types... is data deduplication?...15 Data deduplication and the HP StoreOnce Backup System 15 Tape rotation example with data deduplication 16 5 Replication 18 Replication overview...18 HP StorageWorks Replication Manager (HP D2D4xxx Series only 19 Replication concepts and terminology ...
Contents 1 Before you start 5 Overview...5 NAS targets for backup applications 5 Virtual Tape Library targets for backup applications 5 Comparing NAS and Virtual Tape Library targets 6 Connecting to the HP StoreOnce Backup System 6 For more information...6 2 Virtual Tape Devices 7 Overview...7 Emulation types... is data deduplication?...15 Data deduplication and the HP StoreOnce Backup System 15 Tape rotation example with data deduplication 16 5 Replication 18 Replication overview...18 HP StorageWorks Replication Manager (HP D2D4xxx Series only 19 Replication concepts and terminology ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 4
... import...45 Tape spanning ...46 Replication and Tape Attach...46 About this guide 48 Intended audience...48 Related documentation...48 Document conventions and symbols 48 HP technical support...49 Customer self repair...49 Registering your HP D2D Backup System 49 Subscription service...49 HP websites...50 Documentation feedback...50 Index...51 4 Contents
... import...45 Tape spanning ...46 Replication and Tape Attach...46 About this guide 48 Intended audience...48 Related documentation...48 Document conventions and symbols 48 HP technical support...49 Customer self repair...49 Registering your HP D2D Backup System 49 Subscription service...49 HP websites...50 Documentation feedback...50 Index...51 4 Contents
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 5
... • Overview • NAS targets for backup applications • Virtual Tape Library targets for backup applications • Comparing NAS and VTL targets • Connecting to the HP StoreOnce Backup System • For more information Overview The HP StoreOnce Backup System is a disk-based storage appliance for ... up host network servers or PCs to target devices on an HP D2D Backup System provide network file share access that support backup to disk. All HP StoreOnce devices automatically make use of StoreOnce deduplication, ensuring efficient and cost-effective use of disk space....
... • Overview • NAS targets for backup applications • Virtual Tape Library targets for backup applications • Comparing NAS and VTL targets • Connecting to the HP StoreOnce Backup System • For more information Overview The HP StoreOnce Backup System is a disk-based storage appliance for ... up host network servers or PCs to target devices on an HP D2D Backup System provide network file share access that support backup to disk. All HP StoreOnce devices automatically make use of StoreOnce deduplication, ensuring efficient and cost-effective use of disk space....
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 6
...using the Web Management Interface to configure and monitor devices, refer to the HP StoreOnce D2D Backup System user guide. 6 Before you start supports direct tape offload available with backup applications that supports backup to tape May be used with file shares, such as a staging ...of the differences between NAS targets and Virtual Tape devices. NOTE: The HP D2DBS Generic Library emulation type provides the most cases, potentially backup application saving money Connecting to the HP StoreOnce Backup System The Web Management Interface is the main tool for accessing and ...
...using the Web Management Interface to configure and monitor devices, refer to the HP StoreOnce D2D Backup System user guide. 6 Before you start supports direct tape offload available with backup applications that supports backup to tape May be used with file shares, such as a staging ...of the differences between NAS targets and Virtual Tape devices. NOTE: The HP D2DBS Generic Library emulation type provides the most cases, potentially backup application saving money Connecting to the HP StoreOnce Backup System The Web Management Interface is the main tool for accessing and ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 7
... emulation type is clearly identifiable Overview 7 They appear to as in the dropdown list on the HP StoreOnce Backup System which allows you will be used because it is not supported on your backup application, this chapter: • Overview • Emulation types • Creating and configuring Virtual ... varies by your model. Each storage slot contains a cartridge. This is a generic Ultrium device which the backup application on the HP StoreOnce Backup System to which is not in tape terminology, is that a library can support multiple tape drives whereas an...
... emulation type is clearly identifiable Overview 7 They appear to as in the dropdown list on the HP StoreOnce Backup System which allows you will be used because it is not supported on your backup application, this chapter: • Overview • Emulation types • Creating and configuring Virtual ... varies by your model. Each storage slot contains a cartridge. This is a generic Ultrium device which the backup application on the HP StoreOnce Backup System to which is not in tape terminology, is that a library can support multiple tape drives whereas an...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 8
...are creating iSCSI devices on the number of devices that you configure your HP StoreOnce Backup System with 63 drives is not run at a time. NOTE: All LTO default configurations can access. Backup application support for any host that connects using iSCSI, even if the ...-E series Library: This is a single Ultrium tape drive autoloader with BackupExec and Netbackup. • HP 1x8 G2 Autoloader: This is an enterprise tape library solution which involve simultaneous backup jobs to configure many drives per library and many cartridges per library (see values for D2DBS emulation...
...are creating iSCSI devices on the number of devices that you configure your HP StoreOnce Backup System with 63 drives is not run at a time. NOTE: All LTO default configurations can access. Backup application support for any host that connects using iSCSI, even if the ...-E series Library: This is a single Ultrium tape drive autoloader with BackupExec and Netbackup. • HP 1x8 G2 Autoloader: This is an enterprise tape library solution which involve simultaneous backup jobs to configure many drives per library and many cartridges per library (see values for D2DBS emulation...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 9
... deduplication ratio. IMPORTANT: The maximum number of devices per 96 library (D2DBS) 96 1024 HP D2D4112 24 96 HP D2D4312 50 200 HP D2D4324 50 200 120 250 250 1024 4096 4096 NOTE: Apart from backups that must run in the library being seen (which may include the library device). This...It allows for a single library (and therefore dedupe store) to contain similar data from the HP D2D2502i, it is only possible to configure NAS shares. For example: if you can be configured on backups which are no hard limits on the number of drives per library. If using these flexible ...
... deduplication ratio. IMPORTANT: The maximum number of devices per 96 library (D2DBS) 96 1024 HP D2D4112 24 96 HP D2D4312 50 200 HP D2D4324 50 200 120 250 250 1024 4096 4096 NOTE: Apart from backups that must run in the library being seen (which may include the library device). This...It allows for a single library (and therefore dedupe store) to contain similar data from the HP D2D2502i, it is only possible to configure NAS shares. For example: if you can be configured on backups which are no hard limits on the number of drives per library. If using these flexible ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 10
...may be able to configure any NAS shares for that appliance. • Please refer to other devices on Host 1. VTL devices on the HP D2D Backup System, but you will have fixed values for maximum and recommended values. NOTE: G1 products do not support all emulation types). Figure 1 ...means fewer hosts may specify the number of slots during installation. 10 Virtual Tape Devices Figure 1 Device configuration with 200 drives on an HP D2D4312 Backup System, you configure 1 library with one host • By default, only one device is the network server or PC that has ...
...may be able to configure any NAS shares for that appliance. • Please refer to other devices on Host 1. VTL devices on the HP D2D Backup System, but you will have fixed values for maximum and recommended values. NOTE: G1 products do not support all emulation types). Figure 1 ...means fewer hosts may specify the number of slots during installation. 10 Virtual Tape Devices Figure 1 Device configuration with 200 drives on an HP D2D4312 Backup System, you configure 1 library with one host • By default, only one device is the network server or PC that has ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 11
... a flexible configuration between several Fibre Channel hosts and Fibre Channel targets such as HP StoreOnce Backup Systems. Switched fabric configurations are implemented with multiple hosts Backup applications and Replication Target libraries Replication Target libraries are two occasions when it may ... is visible to all other devices on the network using the backup application See the HP StoreOnce D2D Backup System user guide for a specific host during installation; Fibre Channel topologies The HP StoreOnce Backup System supports both switched fabric and direct attach (private loop) ...
... a flexible configuration between several Fibre Channel hosts and Fibre Channel targets such as HP StoreOnce Backup Systems. Switched fabric configurations are implemented with multiple hosts Backup applications and Replication Target libraries Replication Target libraries are two occasions when it may ... is visible to all other devices on the network using the backup application See the HP StoreOnce D2D Backup System user guide for a specific host during installation; Fibre Channel topologies The HP StoreOnce Backup System supports both switched fabric and direct attach (private loop) ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 12
... Zoning is only required if a switched fabric topology is implemented by creating a specific zone for the HP StoreOnce Backup System is implemented by connecting the HP StoreOnce Backup System directly to see . For optimal performance, where practical, dedicate HBAs for configurations that host. Due... (no multipath to tape or library devices on the HP StoreOnce Backup System, but are not limited to: • Limiting unnecessary discoveries on the HP StoreOnce Backup System • Reducing stress on the HP StoreOnce Backup System and its library devices by that are supported. ...
... Zoning is only required if a switched fabric topology is implemented by creating a specific zone for the HP StoreOnce Backup System is implemented by connecting the HP StoreOnce Backup System directly to see . For optimal performance, where practical, dedicate HBAs for configurations that host. Due... (no multipath to tape or library devices on the HP StoreOnce Backup System, but are not limited to: • Limiting unnecessary discoveries on the HP StoreOnce Backup System • Reducing stress on the HP StoreOnce Backup System and its library devices by that are supported. ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 13
...make much more information about using the NAS share to allow efficient use of data using a backup application. The limit is called the deduplication threshold. See the HP StoreOnce Backup System user guide for more information about the NFS interface. Maximum number of NAS shares The ... devices may be used ONLY by backup applications that can be stored on each NAS share. The HP StoreOnce Backup System imposes a limit on the NAS share, which provides the ability to the UNIX and Linux Configuration Guide for backup applications. Backup application support NAS shares may be...
...make much more information about using the NAS share to allow efficient use of data using a backup application. The limit is called the deduplication threshold. See the HP StoreOnce Backup System user guide for more information about the NFS interface. Maximum number of NAS shares The ... devices may be used ONLY by backup applications that can be stored on each NAS share. The HP StoreOnce Backup System imposes a limit on the NAS share, which provides the ability to the UNIX and Linux Configuration Guide for backup applications. Backup application support NAS shares may be...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 14
...also the maximum that are allowed per appliance. A file within a share may only be below the deduplication threshold. Backup applications generally create a small number of additional files during a backup job in most instances, these files will be opened by one user at a time. So, there is also a...the files that may be configured when using "user" or AD authentication for access to a CIFS share is 50. Across the whole HP StoreOnce Backup System the number of simultaneously open files is the total number of users per CIFS share The maximum number of users per CIFS server...
...also the maximum that are allowed per appliance. A file within a share may only be below the deduplication threshold. Backup applications generally create a small number of additional files during a backup job in most instances, these files will be opened by one user at a time. So, there is also a...the files that may be configured when using "user" or AD authentication for access to a CIFS share is 50. Across the whole HP StoreOnce Backup System the number of simultaneously open files is the total number of users per CIFS share The maximum number of users per CIFS server...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 15
... of the Index files As a backup stream arrives at the HP StoreOnce Backup System the stream of data is "chunked" into nominal 4K chunks, a hashing algorithm is being written to deduplication enabled. Data deduplication and the HP StoreOnce Backup System Data deduplication is associated with ...a host server and deduplication allows a greater amount of full backups can be stored for the hashed data chunks created by both replication...
... of the Index files As a backup stream arrives at the HP StoreOnce Backup System the stream of data is "chunked" into nominal 4K chunks, a hashing algorithm is being written to deduplication enabled. Data deduplication and the HP StoreOnce Backup System Data deduplication is associated with ...a host server and deduplication allows a greater amount of full backups can be stored for the hashed data chunks created by both replication...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 16
... example with data deduplication The two most significant factors affecting the deduplication ratio for a 1 TB file server backup. In practice, assuming 1.25 TB is available for backup for this library, this affects the space required to archive data offline. • With data deduplication: even...each host on the same size of storage (HP StoreOnce device) • Prolongs disk data retention periods • Reduces the volume of data that would otherwise have been archived offline. The following example shows projected savings for backup are used to a greater depth of historical...
... example with data deduplication The two most significant factors affecting the deduplication ratio for a 1 TB file server backup. In practice, assuming 1.25 TB is available for backup for this library, this affects the space required to archive data offline. • With data deduplication: even...each host on the same size of storage (HP StoreOnce device) • Prolongs disk data retention periods • Reduces the volume of data that would otherwise have been archived offline. The following example shows projected savings for backup are used to a greater depth of historical...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 17
Table 6 Data deduplication savings, example 1 1st daily full backup 1st daily incremental backup 2nd daily incremental backup 3rd daily incremental backup 4th daily incremental backup 5th daily incremental backup 2nd weekly full backup 3rd weekly full backup 25th weekly full backup TOTAL Data stored normally 500 GB 50 GB 50 GB 50 GB 50 GB 50 GB 500 GB 500 GB 500 GB 12,750 GB Figure 4 Space saving with deduplication Data stored with deduplication 500 GB 5 GB 5 GB 5 GB 5 GB 5 GB 25 GB 25 GB 25 GB 1,125 GB Tape rotation example with data deduplication 17
Table 6 Data deduplication savings, example 1 1st daily full backup 1st daily incremental backup 2nd daily incremental backup 3rd daily incremental backup 4th daily incremental backup 5th daily incremental backup 2nd weekly full backup 3rd weekly full backup 25th weekly full backup TOTAL Data stored normally 500 GB 50 GB 50 GB 50 GB 50 GB 50 GB 500 GB 500 GB 500 GB 12,750 GB Figure 4 Space saving with deduplication Data stored with deduplication 500 GB 5 GB 5 GB 5 GB 5 GB 5 GB 25 GB 25 GB 25 GB 1,125 GB Tape rotation example with data deduplication 17
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 18
...is always mapped at sub-directory or file level). This state may result in failure to describe a way of the data on one HP StoreOnce Backup System (the Source Appliance) to be repaired by the target appliance as soon as possible the current state of synchronizing data between Source... If the replication Source Appliance fails and goes offline whilst it is ready for access. This will not be left in slots on another HP StoreOnce Backup System (the Target Appliance) at another location. It is always mapped at share-share level (not at slot level. 18 Replication Target ...
...is always mapped at sub-directory or file level). This state may result in failure to describe a way of the data on one HP StoreOnce Backup System (the Source Appliance) to be repaired by the target appliance as soon as possible the current state of synchronizing data between Source... If the replication Source Appliance fails and goes offline whilst it is ready for access. This will not be left in slots on another HP StoreOnce Backup System (the Target Appliance) at another location. It is always mapped at share-share level (not at slot level. 18 Replication Target ...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 19
... Settings page. Restricting access to replication sources Source Appliance Permissions are being replicated across multiple sites. See the HP StoreOnce Backup System user guide for the devices. Using D2D Replication Manager, administrators create, manage, and remove groups of sources... and devices to which deployment model is no control over mapping between Source and Target HP StoreOnce Backup Systems, it visible. HP StorageWorks Replication Manager (HP D2D4xxx Series only) HP StorageWorks D2D Replication Manager (D2D Replication Manager) is a standalone software application that is...
... Settings page. Restricting access to replication sources Source Appliance Permissions are being replicated across multiple sites. See the HP StoreOnce Backup System user guide for the devices. Using D2D Replication Manager, administrators create, manage, and remove groups of sources... and devices to which deployment model is no control over mapping between Source and Target HP StoreOnce Backup Systems, it visible. HP StorageWorks Replication Manager (HP D2D4xxx Series only) HP StorageWorks D2D Replication Manager (D2D Replication Manager) is a standalone software application that is...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 20
... share is visible to the host, but Replication-Target libraries are some key concepts and terminology that is no restriction on the source HP StoreOnce Backup System. Target Appliance 6. A single HP StoreOnce Backup System may host both Source and Target Appliance roles. You can , therefore, act simultaneously in both Replication-Source and Replication-Target shares and...
... share is visible to the host, but Replication-Target libraries are some key concepts and terminology that is no restriction on the source HP StoreOnce Backup System. Target Appliance 6. A single HP StoreOnce Backup System may host both Source and Target Appliance roles. You can , therefore, act simultaneously in both Replication-Source and Replication-Target shares and...
HP D2D Backup System Concepts guide (EH985-90915, March 2011)
Page 21
...library on the Source Appliance may be edited after initial mapping creation. You cannot split slot mappings from that Source Appliance (the HP StoreOnce Backup System that contains the shares and libraries that data to regional data centers. This selection is called a slot mapping collection and ...wish to understand are supported from one Source Share across several Target Shares. HP D2D4xxx Series Each HP D2D 4004/4009 or 4106/4112 Series Source Appliance can replicate varies according to HP StoreOnce Backup System, see the tables in the Job Concurrency section below. The number ...
...library on the Source Appliance may be edited after initial mapping creation. You cannot split slot mappings from that Source Appliance (the HP StoreOnce Backup System that contains the shares and libraries that data to regional data centers. This selection is called a slot mapping collection and ...wish to understand are supported from one Source Share across several Target Shares. HP D2D4xxx Series Each HP D2D 4004/4009 or 4106/4112 Series Source Appliance can replicate varies according to HP StoreOnce Backup System, see the tables in the Job Concurrency section below. The number ...