Source:HSM-aware Backup for Windows: Difference between revisions

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{{Copyright SEP AG en‎}}
{{Copyright SEP AG en‎}}


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{{Navigation_latest|release=4.4.2/4.4.3|link=[[Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]]}}
{{Navigation_latest|release=4.4.2/4.4.3|link=[[Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]]}}


== Shorten backup times with HSM-aware backups ==</translate>
== Shorten backup times with HSM-aware backups == <!--T:3--></translate>
<div class="boilerplate metadata" id="Additional resources" style="background-color: #f0f0f0; color:#636f73; border: 1px ridge #cdd3db; margin: 0.5em; padding: 0.5em; float: right; width: 35%; "><center><b>
<div class="boilerplate metadata" id="Additional resources" style="background-color: #f0f0f0; color:#636f73; border: 1px ridge #cdd3db; margin: 0.5em; padding: 0.5em; float: right; width: 35%; "><center><b>
<translate>Additional resources</translate></b></center>
<translate><!--T:4-->
Additional resources</translate></b></center>


{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
| rowspan="2" style="padding:0px 10px 0px;" |  
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<translate>[[File:SEP_next.png|45px|link=Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]]</translate>
<translate><!--T:5-->
[[File:SEP_next.png|45px|link=Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]]</translate>
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
<translate>See also: [[Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]] – [[Special:MyLanguage/About_Backup|About Backup]] </translate>
<translate><!--T:6-->
See also: [[Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]] – [[Special:MyLanguage/About_Backup|About Backup]] </translate>
|}
|}


{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
| rowspan="2" style="padding:0px 10px 0px;" |  
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<translate>[[File:SEP Tip.png|45px|link=Special:MyLanguage/FAQ#backup_overview|FAQ]]</translate>
<translate><!--T:7-->
[[File:SEP Tip.png|45px|link=Special:MyLanguage/FAQ#backup_overview|FAQ]]</translate>
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
<translate>Check [[Special:MyLanguage/FAQ#backup_overview|FAQ]] to find the answers to most common questions.</translate>
<translate><!--T:8-->
Check [[Special:MyLanguage/FAQ#backup_overview|FAQ]] to find the answers to most common questions.</translate>
|}
|}


{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
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| rowspan="2" style="padding:0px 10px 0px;" |  
<translate>[[File:SEP Troubleshooting.png|45px|link=Special:MyLanguage/Troubleshooting_Guide#Backup_problems|Troubleshooting Guide]]</translate>
<translate><!--T:9-->
[[File:SEP Troubleshooting.png|45px|link=Special:MyLanguage/Troubleshooting_Guide#Backup_problems|Troubleshooting Guide]]</translate>
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
<translate>If you have a problem with ''Backup'', check [[Special:MyLanguage/Troubleshooting_Guide#Backup_problems|Troubleshooting Guide]].</translate>
<translate><!--T:10-->
If you have a problem with ''Backup'', check [[Special:MyLanguage/Troubleshooting_Guide#Backup_problems|Troubleshooting Guide]].</translate>
|}
|}


{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
{|style="margin: auto; margin-bottom:1em; width:100%; border:0px solid grey;"
| rowspan="2" style="padding:0px 10px 0px;" |  
| rowspan="2" style="padding:0px 10px 0px;" |  
<translate>[[File:icon_archived_docs.png|45px|link=Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]]</translate>
<translate><!--T:11-->
[[File:icon_archived_docs.png|45px|link=Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]]</translate>
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
| style="padding:0px 40px 0px 10px; color: grey; font-size: 90%; text-align:left;" |  
<translate>If you are using an older SEP sesam version, refer to [[Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]].</translate>
<translate><!--T:12-->
If you are using an older SEP sesam version, refer to [[Special:MyLanguage/SEP_sesam_Documentation#previous|Documentation archive]].</translate>
|}</div>
|}</div>
<translate>The trend of data growth continues to be alarmingly strong while managing large amount of storage capacity is getting more and more expensive. Data protection and file sharing are priority one issues. One of the biggest challenges is how to classify and manage diverse data while at the same time assuring uninterrupted access and conformance with existing policies. Solutions for business data protection and
<translate><!--T:13-->
The trend of data growth continues to be alarmingly strong while managing large amount of storage capacity is getting more and more expensive. Data protection and file sharing are priority one issues. One of the biggest challenges is how to classify and manage diverse data while at the same time assuring uninterrupted access and conformance with existing policies. Solutions for business data protection and
storage challenges are diverse and not always compatible. Among different methods on reducing the costs of data storage and facilitating data management tasks is '''''Hierarchical Storage Management'''''.  
storage challenges are diverse and not always compatible. Among different methods on reducing the costs of data storage and facilitating data management tasks is '''''Hierarchical Storage Management'''''.  


=== {{anchor|HSM}}HSM overview ===  
=== {{anchor|HSM}}HSM overview === <!--T:14-->


<!--T:15-->
HSM simplifies and optimizes data storage by providing an automated transfer of less frequently used data from primary storage to less expensive secondary storage, such as magnetic tapes. Migration of data is based on business policies and performance requirements. When data is migrated, only a file stub remains on the primary storage that appears online to the user, regardless of whether it is stored online, near-line or offline. When needed, the original data is recalled back from secondary to the primary storage.  
HSM simplifies and optimizes data storage by providing an automated transfer of less frequently used data from primary storage to less expensive secondary storage, such as magnetic tapes. Migration of data is based on business policies and performance requirements. When data is migrated, only a file stub remains on the primary storage that appears online to the user, regardless of whether it is stored online, near-line or offline. When needed, the original data is recalled back from secondary to the primary storage.  


<!--T:16-->
The stub retains file’s original metadata, e.g., last-modified time and size, but does not contain any of the original data contents.
The stub retains file’s original metadata, e.g., last-modified time and size, but does not contain any of the original data contents.


=== {{anchor|complementary_solution}}HSM as a complementary solution to other data protection methods ===</translate>
=== {{anchor|complementary_solution}}HSM as a complementary solution to other data protection methods === <!--T:17--></translate>




{| style="width: 70%;"
{| style="width: 70%;"
|-
|-
| style="width: 25%; text-align:center; color: white; background-color: #234191;"|'''''<translate>Comparison of storage strategies</translate>'''''
| style="width: 25%; text-align:center; color: white; background-color: #234191;"|'''''<translate><!--T:18-->
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate>Backup</translate>'''
Comparison of storage strategies</translate>'''''
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate>HSM</translate>'''
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate><!--T:19-->
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate>Archive</translate>'''
Backup</translate>'''
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate><!--T:20-->
HSM</translate>'''
| style="width: 25%;  text-align:center; color: white; background-color: #234191;"|'''<translate><!--T:21-->
Archive</translate>'''
|- style="text-align:left;”
|- style="text-align:left;”
| style="background-color: #ACC4E4;"|''<translate>How it works?</translate>''  
| style="background-color: #ACC4E4;"|''<translate><!--T:22-->
| style="background-color: #ACC4E4;"|<translate>Protecting data by producing secondary copy of data for cases of data loss</translate>
How it works?</translate>''  
| style="background-color: #ACC4E4;"|<translate><!--T:23-->
Protecting data by producing secondary copy of data for cases of data loss</translate>


| style="background-color: #ACC4E4;"|<translate>Migrating less frequently used data from primary to more cost-effective storage</translate>
| style="background-color: #ACC4E4;"|<translate><!--T:24-->
Migrating less frequently used data from primary to more cost-effective storage</translate>


| style="background-color: #ACC4E4;"|<translate>Keeping data in secondary storage for preserving data content and complying with legal regulations</translate>
| style="background-color: #ACC4E4;"|<translate><!--T:25-->
Keeping data in secondary storage for preserving data content and complying with legal regulations</translate>


|- style="text-align:left; background-color: #E5F6FE;”
|- style="text-align:left; background-color: #E5F6FE;”
| style="background-color: #E5F6FE;"|''<translate>What is stored?</translate>''
| style="background-color: #E5F6FE;"|''<translate><!--T:26-->
| style="background-color: #E5F6FE;"|<translate>Active data, entire file systems</translate>
What is stored?</translate>''
| style="background-color: #E5F6FE;"|<translate><!--T:27-->
Active data, entire file systems</translate>


| style="background-color: #E5F6FE;"|<translate>Less frequently used data</translate>
| style="background-color: #E5F6FE;"|<translate><!--T:28-->
Less frequently used data</translate>


| style="background-color: #E5F6FE;"|<translate>Inactive data for long-term retention</translate>
| style="background-color: #E5F6FE;"|<translate><!--T:29-->
Inactive data for long-term retention</translate>


|- style="text-align:left;”
|- style="text-align:left;”
|''<translate>What happens to original data?</translate>''
|''<translate><!--T:30-->
|<translate>Stays as is in primary storage</translate>
What happens to original data?</translate>''
|<translate><!--T:31-->
Stays as is in primary storage</translate>


|<translate>Stub (metadata with pointers) left in primary storage, data content moved to secondary storage</translate>
|<translate><!--T:32-->
Stub (metadata with pointers) left in primary storage, data content moved to secondary storage</translate>


|<translate>Original usually deleted from the primary storage</translate>
|<translate><!--T:33-->
Original usually deleted from the primary storage</translate>


|- style="text-align:left; background-color: #E5F6FE;”
|- style="text-align:left; background-color: #E5F6FE;”
| style="background-color: #E5F6FE;"|''<translate>How is data recalled?</translate>''
| style="background-color: #E5F6FE;"|''<translate><!--T:34-->
| style="background-color: #E5F6FE;"|<translate>In the event of a failure of online data, it is restored by administrator</translate>
How is data recalled?</translate>''
| style="background-color: #E5F6FE;"|<translate><!--T:35-->
In the event of a failure of online data, it is restored by administrator</translate>


| style="background-color: #E5F6FE;"|<translate>Data appears to be online, seamless access for a user </translate>
| style="background-color: #E5F6FE;"|<translate><!--T:36-->
Data appears to be online, seamless access for a user </translate>


| style="background-color: #E5F6FE;"|<translate>If data is required by users or for legal purposes, administrator can retrieve it</translate>
| style="background-color: #E5F6FE;"|<translate><!--T:37-->
If data is required by users or for legal purposes, administrator can retrieve it</translate>


|- style="text-align:left;”
|- style="text-align:left;”
| style="background-color: #ACC4E4;"|''<translate>What storage infrastructure?</translate>''   
| style="background-color: #ACC4E4;"|''<translate><!--T:38-->
| style="background-color: #ACC4E4;"|<translate>Quickly accessible, meet performance needs</translate>
What storage infrastructure?</translate>''   
| style="background-color: #ACC4E4;"|<translate><!--T:39-->
Quickly accessible, meet performance needs</translate>




| style="background-color: #ACC4E4;"|<translate>Combined/tiered storage for automated transfer of data from online to secondary/near-line storage (e.g., easily retrievable tape or writable optical) </translate>
| style="background-color: #ACC4E4;"|<translate><!--T:40-->
Combined/tiered storage for automated transfer of data from online to secondary/near-line storage (e.g., easily retrievable tape or writable optical) </translate>


| style="background-color: #ACC4E4;"|<translate>Low-cost, high capacity and durability cold storage</translate>
| style="background-color: #ACC4E4;"|<translate><!--T:41-->
Low-cost, high capacity and durability cold storage</translate>


|}
|}


<translate>== {{anchor|HSM_aware_bck}}SEP sesam's HSM-aware backup for Windows ==
<translate>== {{anchor|HSM_aware_bck}}SEP sesam's HSM-aware backup for Windows == <!--T:42-->


<!--T:43-->
From '''SEP sesam 4.4.2''' onwards, '''HSM-aware backup for Windows''' is provided by default as a part of a SEP sesam package. SEP sesam provides efficient backup of data on Windows systems that is managed by HSM. HSM detects data that has not been accessed in a long period of time and migrates such inactive data to lower-cost nearline storage, leaving only small stub files in the original location on the primary storage.  
From '''SEP sesam 4.4.2''' onwards, '''HSM-aware backup for Windows''' is provided by default as a part of a SEP sesam package. SEP sesam provides efficient backup of data on Windows systems that is managed by HSM. HSM detects data that has not been accessed in a long period of time and migrates such inactive data to lower-cost nearline storage, leaving only small stub files in the original location on the primary storage.  


<!--T:44-->
SEP sesam as an HSM-aware solution '''recognizes the reparse tags''' in stub files and does not trigger a recall of the original files, but '''performs a backup of the placeholder files''' without retrieving their contents. The backed up stub files can then be restored as any other data to the same location or to a new restore target. If the stub files are going to be restored to a new host, the new host must have the HSM software installed in order to correctly interpret restored reparse points.
SEP sesam as an HSM-aware solution '''recognizes the reparse tags''' in stub files and does not trigger a recall of the original files, but '''performs a backup of the placeholder files''' without retrieving their contents. The backed up stub files can then be restored as any other data to the same location or to a new restore target. If the stub files are going to be restored to a new host, the new host must have the HSM software installed in order to correctly interpret restored reparse points.


<!--T:45-->
SEP sesam also provides an option ''–o follow'' which '''allows backing up a complete migrated file''' rather than just a stub. Typically, this option should not be used for backing up the whole volumes which were migrated to another storage tier as this would mean that the whole archive is recalled and backed up causing unwanted space consumption on the primary storage and HSM performance issues.  
SEP sesam also provides an option ''–o follow'' which '''allows backing up a complete migrated file''' rather than just a stub. Typically, this option should not be used for backing up the whole volumes which were migrated to another storage tier as this would mean that the whole archive is recalled and backed up causing unwanted space consumption on the primary storage and HSM performance issues.  


<!--T:46-->
The ''–o follow'' option '''should only be used for exceptions''' – to back up specific data, e.g., files that are of a high importance and need a complete backup copy to be saved in a backup pool. It is also recommended to use this option only once to perform a full backup and later on perform only ordinary HSM-aware backups (without the ''–o follow'' option specified). The option ''–o follow'' must be specifically set [[Standard_Backup_Procedure#Step_1:_Creating_a_backup_task|when creating a backup task]] under the [[Tasks_By_Clients_4.4#Options|''Options'']] tab -> ''Additional call arguments'' (Expert Options) -> ''Save options'' -> enter ''–o follow''.
The ''–o follow'' option '''should only be used for exceptions''' – to back up specific data, e.g., files that are of a high importance and need a complete backup copy to be saved in a backup pool. It is also recommended to use this option only once to perform a full backup and later on perform only ordinary HSM-aware backups (without the ''–o follow'' option specified). The option ''–o follow'' must be specifically set [[Standard_Backup_Procedure#Step_1:_Creating_a_backup_task|when creating a backup task]] under the [[Tasks_By_Clients_4.4#Options|''Options'']] tab -> ''Additional call arguments'' (Expert Options) -> ''Save options'' -> enter ''–o follow''.


<!--T:47-->
[[image:HSM-SEP_integration.jpg|left|500px|link=]]</translate>
[[image:HSM-SEP_integration.jpg|left|500px|link=]]</translate>
<br clear=all>
<br clear=all>


<translate>The '''integration of SEP sesam and Windows HSM''' solution is beneficial in terms of '''reducing your backup window''' by using '''HSM as a source-side data reduction system''' by migrating unused data to nearline storage, and '''SEP sesam as a target-side reduction system''' by using combined [[Special:MyLanguage/The_Backup_4.4#Backup_level_types_.28C.2C_F.2C_D.2C_I.29|backup types]] (full, differential and incremental) and [[Special:MyLanguage/Configuring_an_Si3_Deduplication_Store|data deduplication]].
<translate><!--T:48-->
The '''integration of SEP sesam and Windows HSM''' solution is beneficial in terms of '''reducing your backup window''' by using '''HSM as a source-side data reduction system''' by migrating unused data to nearline storage, and '''SEP sesam as a target-side reduction system''' by using combined [[Special:MyLanguage/The_Backup_4.4#Backup_level_types_.28C.2C_F.2C_D.2C_I.29|backup types]] (full, differential and incremental) and [[Special:MyLanguage/Configuring_an_Si3_Deduplication_Store|data deduplication]].


== See also ==
== See also == <!--T:49-->
[[Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]] – [[Special:MyLanguage/About_Backup|About Backup]]</translate>
[[Special:MyLanguage/Standard_Backup_Procedure|Standard Backup Procedure]] – [[Special:MyLanguage/About_Backup|About Backup]]</translate>

Revision as of 15:15, 25 September 2017

Other languages:

Template:Copyright SEP AG en

Docs latest icon.png Welcome to the latest SEP sesam documentation version 4.4.2/4.4.3. For previous documentation version(s), check Documentation archive.


Shorten backup times with HSM-aware backups

The trend of data growth continues to be alarmingly strong while managing large amount of storage capacity is getting more and more expensive. Data protection and file sharing are priority one issues. One of the biggest challenges is how to classify and manage diverse data while at the same time assuring uninterrupted access and conformance with existing policies. Solutions for business data protection and storage challenges are diverse and not always compatible. Among different methods on reducing the costs of data storage and facilitating data management tasks is Hierarchical Storage Management.

HSM overview

HSM simplifies and optimizes data storage by providing an automated transfer of less frequently used data from primary storage to less expensive secondary storage, such as magnetic tapes. Migration of data is based on business policies and performance requirements. When data is migrated, only a file stub remains on the primary storage that appears online to the user, regardless of whether it is stored online, near-line or offline. When needed, the original data is recalled back from secondary to the primary storage.

The stub retains file’s original metadata, e.g., last-modified time and size, but does not contain any of the original data contents.

HSM as a complementary solution to other data protection methods

Comparison of storage strategies Backup HSM Archive
How it works? Protecting data by producing secondary copy of data for cases of data loss Migrating less frequently used data from primary to more cost-effective storage Keeping data in secondary storage for preserving data content and complying with legal regulations
What is stored? Active data, entire file systems Less frequently used data Inactive data for long-term retention
What happens to original data? Stays as is in primary storage Stub (metadata with pointers) left in primary storage, data content moved to secondary storage Original usually deleted from the primary storage
How is data recalled? In the event of a failure of online data, it is restored by administrator Data appears to be online, seamless access for a user If data is required by users or for legal purposes, administrator can retrieve it
What storage infrastructure? Quickly accessible, meet performance needs


Combined/tiered storage for automated transfer of data from online to secondary/near-line storage (e.g., easily retrievable tape or writable optical) Low-cost, high capacity and durability cold storage

SEP sesam's HSM-aware backup for Windows

From SEP sesam 4.4.2 onwards, HSM-aware backup for Windows is provided by default as a part of a SEP sesam package. SEP sesam provides efficient backup of data on Windows systems that is managed by HSM. HSM detects data that has not been accessed in a long period of time and migrates such inactive data to lower-cost nearline storage, leaving only small stub files in the original location on the primary storage.

SEP sesam as an HSM-aware solution recognizes the reparse tags in stub files and does not trigger a recall of the original files, but performs a backup of the placeholder files without retrieving their contents. The backed up stub files can then be restored as any other data to the same location or to a new restore target. If the stub files are going to be restored to a new host, the new host must have the HSM software installed in order to correctly interpret restored reparse points.

SEP sesam also provides an option –o follow which allows backing up a complete migrated file rather than just a stub. Typically, this option should not be used for backing up the whole volumes which were migrated to another storage tier as this would mean that the whole archive is recalled and backed up causing unwanted space consumption on the primary storage and HSM performance issues.

The –o follow option should only be used for exceptions – to back up specific data, e.g., files that are of a high importance and need a complete backup copy to be saved in a backup pool. It is also recommended to use this option only once to perform a full backup and later on perform only ordinary HSM-aware backups (without the –o follow option specified). The option –o follow must be specifically set when creating a backup task under the Options tab -> Additional call arguments (Expert Options) -> Save options -> enter –o follow.

HSM-SEP integration.jpg


The integration of SEP sesam and Windows HSM solution is beneficial in terms of reducing your backup window by using HSM as a source-side data reduction system by migrating unused data to nearline storage, and SEP sesam as a target-side reduction system by using combined backup types (full, differential and incremental) and data deduplication.

See also

Standard Backup ProcedureAbout Backup