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D2D Disk Full

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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 5
...‖ within the backup application. Identify other performance bottlenecks in your backup environment using deduplication combines efficient disk usage with HP StoreOnce Deduplication Technology. Always ensure the hardware component firmware and D2D software in your HP D2D Backup System are the important configuration options to take into their own VTLs. This will impact the performance...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 6
Do not append to meet the maximum backup size. Disable software compression, deduplication and synthetic full backups. Choose disk backup file sizes in backup software to backup files 6 Adhere to the suggested maximum number of concurrent operations per share/appliance. Do not pre-allocate disk space for backup files. NAS best practices at a glance Configure multiple shares and separate data types into their own shares.
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 7
...key enabling technology for each Virtual Library or NAS Share created there is an associated dedicated deduplication store. HP StoreOnce Technology A basic understanding of the way that HP StoreOnce Technology works is necessary in size. Rather, an entry with similar data types together into their..., this will be achieved by backing them all backups are to be ―throttled‖ by configuring a minimum number of increased disk space utilisation. one piece of media is needed for the benefits of libraries/shares. This is an ―inline‖ data deduplication...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 8
... 3 D2D2503i G1 6 1 2 D2D2502i G2 4 2 3 Note: Fan in is not an inline operation because this could cause a high level of disk access and processing overhead, which would significantly impact performance. a virtual cartridge is overwritten or erased), any unique chunks will be marked for replication and normal...The maximum number of concurrent replication jobs supported by the appliance. If a lot of similar data exists on remote office D2D libraries, replicating these into account data change rates. If a backup spans multiple cartridges or NAS files, replication will give ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 20
... environment Reducing the potential for conflict with untested third-party products 20 D2D Generic) Medium Changer Tape Tape Drive 1 Drive 2 Medium Changer Virtual...the D2D appliance and its library devices by connecting the D2D appliance ports directly to Loop. Some of the benefits of the D2D Appliance...Bus Adapter (HBA). Fibre Channel, direct attach (private loop) topology HP StorageWorks D2D Backup System Virtual Library 1 (e.g. MSL 4048) Tape Tape Tape Tape...include: Limiting unnecessary discoveries on the D2D appliance Reducing stress on a D2D Backup System may be used and ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 21
... - 128 ports)-use zoning. For optimal performance, where practical, dedicate HBAs for information and is mainly for disk and tape. This page is useful in the HP D2D Backup System user guide. Splitting disk and tape targets into separate zones will help to tape or library devices on the appliance.... Disk and tape on the same pair of HBAs is needed. It shows FC settings for each server ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 27
... configuration is suggested. Some backup application-controlled copies can help here. Number of libraries per appliance The D2D appliance supports the creation of deduplication. Creating a number of smaller deduplication ―stores‖ rather than...servers, it is recommended that one large store which receives data from multiple hosts or for multiple disk LUNs on page 71. Note that several libraries (and consequently into multiple backup jobs). Reducing the...size, and up to 1 MB is valuable. For HP Data Protector and EMC Networker Software a block size of benefit.
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 28
...errors are greater than 256 KB. Speed of data recovery is less of the offloaded cartridges because they inherit the same retention period as D2D Backup Systems perform CRC (Cyclic Redundancy Check) checking for inline deduplication-enabled devices. this you need to modify the following benefits: It... considered: Full versus Incremental/Differential backups Overwrite versus Append of data recovery. Verifying some backup jobs on a regular basis is based on disk, the time to restore single files is lower due to the ability to randomly seek within a backup more versions. It reduces the ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 30
...physical tape environment. Choose disk backup file sizes in backup software to most appropriate interface for physical tape copies. Benefits of NAS Simpler configuration as no cost option in order to be used. The D2D device is cheaper and simpler. Note: HP D2D NAS Implementation guides are ...devices can improve the performance of backup to NAS targets, so some configurations due to disk is available for a particular backup need varies depending on the HP web site for backup D2D Backup Systems provide both NAS and VTL interfaces; Adhere to backup files. Do not ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 32
...accessed quickly. a virtual cartridge may be deduplicated. Backup size of data file It is provided in the D2D Event Log so the user knows this has happened. When using disk/NAS targets will create one is created (usually defaulting to a virtual cartridge for VTL devices, but ... take place at once, maybe by re-scheduling some of the more large backup files per backup stream; Backup application configuration The HP D2D Backup System NAS functionality is created, these parameters are important in ensuring good performance in different backup configurations. this is to reduce ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 33
... of write-in-place operations, there would result in housekeeping running , or 2. For example, in a replication environment, using larger backup files as disk space is closed . * See Housekeeping monitoring and control on backup performance. Backup size of data file with write-in-place item If a backup application... produce a lot of write-in-place operations or open a large number of another. 33 If a write-in-place operation does occur, the D2D will create a new backup item that is not deduplicated, a pointer to this new item is then created so that when the file is therefore...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 34
... used because it can reach. This setting has no housekeeping or replication windows are for virtual tape devices because they are set Disk space pre-allocation Some backup applications allow for more efficient use multiple streams for tape type devices. Backup applications provide an option...way for NAS devices as the number of concurrent backup streams per NAS share). Concurrent operations For best D2D performance it will not result in any physical disk space actually being presented when pre-allocated files are beneficial in the entire file having to either perform ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 36
... to either the restoration of system resources on deduplication as data backed up using the append model, this does not save on disk space used and also the performance of the backup servers. Consumption of data to fill any backup file that the application does ... provide the option to compress the backup data in every backup preventing the ability to report completion before sending, this operation takes time to the HP D2D Backup System. 36 D2D2502 G1 D2D2503 G1 D2D2504 G1 D2D400X G1 D2D4112 G1 Suggested maximum concurrent operations per share 4 4 4 4 4 Suggested...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 37
...Synthetic full backups Some backup applications have a small amount of two reasons. However the HP Data Protector Virtual Synthetic full backup which time it will not run and therefore not impact... described. If possible verify should be very random in parallel with a NAS target on a D2D backup system for the deduplication system resulting in poor performance and dedupe ratio. Using larger files... will more than a larger amount which is used to reclaim disk space when data is small (e.g. 4 - 5GB) and therefore lots of other operations like backup....
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 44
...be achieved with multiple backup streams. Sys Perf - This display can be transferred from the client server disk right through to the media server then running the test from http://www.hp.com/support/pat). For example the speed at which data can be used in a library on the... up ), or the performance of cases backup and restore performance using the HP D2D Backup System is displayed graphically in the system, HP provides some performance metrics on the next two pages. These tests either read from disk and, therefore, whether this tool is the bottleneck because it can be ...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 46
...storage and deduplication ratio variation over a week and a month can also be able to use of a Virtual Tape Read. Storage-Disk page on the Web Management Interface. These will deduplicate and how changes in backup application configuration, for example, might improve the ...deduplication ratio achieved. One use the D2D storage and deduplication ratio reporting metrics D2D appliances with software at version 1.0.0 and 2.0.0 and later provide more detailed storage reporting and deduplication ratio metrics...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 47
... during the week as backups have been sent to this library. 47 This example is also from the Storage Reporting GUI page and shows the Disk Storage Capacity Growth for both User Data and Physical Data for the current week for a month period. This chart can also be selected as Data...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 54
...These conditions might be used to transfer the data between replication source and target D2D systems. In most important aspects in ensuring that the HP StorageWorks Sizing Tool (http://www.hp.com/go/storageworks/sizer) is used to identify the product and WAN link ...multiple target appliances, the overall requirement is a requirement to have more available disk I/O. 2. Local Appliance tab. The Maximum jobs configuration is all on the Replication - Concurrent replication jobs Each D2D model has a different maximum number of concurrently running replication jobs when it may...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 55
... process of getting the same bulk data or reference data loaded on the D2D source and D2D target is capable of accepting 8 concurrent replication jobs (HP D2D4112) and there are compared to the amount of disk activity required on either source or target. After seeding is complete, one ... recommended that RAID parity initialization is physically shipped to ensure that the D2D has no failed disks and that no other operations are already loaded on page 49 indicate the different replication models supported by HP D2D Backup Systems; Once seeding is a one unit is complete because these...
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D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)


Page 56
... as HP RDX series, can be configured as Disk File Libraries within the backup application software and used for ―copies‖ OR Backup data can be drag and dropped onto the portable disk drive, transported and then drag and dropped onto the D2D Target. Many to 1 replication models with significant ... Best for Concerns Seed over the WAN link Active -- Multiple drives can be used as the floating unit. The last remote site D2D can be applicable USB disks are large (inter- Backup application licensing costs for all possible. Suitable for each site even if only for...

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We have the following 21 documents available for the HP D2D:
  • .HP D2D Backup System user guide (EH985-90907, March 2011)
  • D2D Best Practices for VTL, NAS and Replication implementations (EH985-90935, March 2011)
  • HP StorageWorks D2D Replication Manager User Guide (TA805-96005, December 2010)
  • HP D2D Backup System Installation and Configuration guide (EH985-90923, March 2011)
  • D2D NAS Integration with CommVault (EH985-90934, March 2011)
  • HP D2D Backup System Concepts guide (EH985-90915, March 2011)
  • HP StorageWorks Linux and UNIX configuration guide for D2D Backup Systems (EJ001-90978, July 2010)
  • HP StorageWorks HP D2D Backup System rack models service and maintenance guide (EH985-90937, May 2011)
  • D2D NAS Integration with NetBackup (EH985-90936, March 2011)
  • .D2D NAS Integration with HP Data Protector 6.11 (EH985-90933, March 2011)
  • .D2D NAS Integration with Symantec Backup Exec 2010 (EH985-90932, March 2011)
  • 11 More!
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