Transcript バックアップウィンドウを削減

バックアップ時間の削減と
AssuredSnap
アジェンダ
• Snapshot レビュー
 データ保護
 RPO vs. RTO
• バックアップ時間を軽減するには
• 要点とまとめ
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AssuredSnap
RTO vs. RPO vs. 予算$ とのトレードオフ
ひとつの方法が全てを満たすわけではありません…
• Recovery Point Objective (RPO)
 How much data can you afford
to lose?
• Recovery Time Objective (RTO)
 How long can you afford to be
without your data?
• Data Classification
 How critical is your data?

All data is not created equal
• Budget
 How much can you afford to spend?
Source: Enterprise Storage Group
“The Evolution of Data Protection”
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AssuredSnap
何に対して守るのか？
•
Protect against disk drive failure
 RAID
•
Protect against logical data loss
or corruption
 Snapshots
•
Protect against full volume or
RAID group loss or corruption
 Volume Copy or Split Mirror
•
Protect against local-area disasters
 Synchronous Replication
•
Protect against wide-area disasters
 Asynchronous Replication or
Remote Snapshot Replication
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データロスの削減 (RPO)
リスクの軽減: 売上げ損失とお客様の信用喪失
•
Traditional Tape Backup
1. File share taken offline at 12:00 am
2. Backed up to tape
3. File share brought back online
at 12:30 am
4. Corruption occurs at 4:30 pm
5. Previous night’s tape located
6. File share restored from previous night’s
backup tape
7. File share back online at 6:00 pm
•
Snapshots
1. Snapshot of File Share taken every
2 hours

12 am, 2 am, 4 am, 6 am, 8 am, 10 am,
12 pm, 2 pm, 4 pm, 6 pm, etc.
2. Corruption occurs at 4:30 pm
3. File share restored from the
4:00 pm snapshot
4. File share back online at 4:45 pm
 30 minutes of work is lost!
 16 hours of work is lost!
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復旧時間の改善 (RTO)
リスクの軽減: ビジネス機会の損失とお客様の信用喪失
•
Traditional Tape Backup
1.
2.
3.
4.
5.
6.
File share taken offline at 12:00 am
Backed up to tape
File share brought back online at 12:30 am
Corruption occurs at 4:30 pm
Previous night’s tape located
File share restored from previous night’s
backup tape
7. File share back online at 6:00 pm
 Data unavailable for 1 ½ hours!
•
Snapshots
1. Snapshot of File Share taken every
2 hours

12 am, 2 am, 4 am, 6 am, 8 am, 10 am,
12 pm, 2 pm, 4 pm, 6 pm, etc.
2. Corruption occurs at 4:30 pm
3. File share restored from the
4:00 pm snapshot
4. File share back online at 4:45 pm
 Data unavailable for 15
minutes!
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バックアップ時間軽減を駆り立てる理由
• Business
 24-hour customer service

E.g., Help desks
 24-hour business processing

E.g., Sales orders
 Customer satisfaction, loyalty and retention
 Competitive advantage and financial viability
• Operational
 7x24x365 operations
 Continuous application availability
 Shrinking backup windows
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バックアップ時間を減らすには
リスクの軽減: アプリケーションの有用性
•
Traditional Tape Backup
1. File share taken offline at 12:00 am
2. Backed up to tape or disk
3. File share brought back online
at 12:30 am
 Application unavailable for
30 minutes!
•
Snapshots
1. Snapshot of File Share taken every
2 hours

12 am, 2 am, 4 am, 6 am, 8 am, 10 am,
12 pm, 2 pm, 4 pm, 6 pm, etc.
 Application unavailable for
< 1 minute!
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スナップショットの用途 – バックアップ時間の低減
ダウンタイム”0”でのバックアップ
Corporate LAN
Exchange Server
File Server
2.3.
Mount
Backup
data toto
1.
Take snapshot
snapshot
backup
tape/disk
server
Database Server
Backup Server
SAN
G:
Primary
Storage
Automated
Tape Library
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データ保護テクノロジーのポジショニング
Data Loss
(RPO)
Outage
(RTO)
Cost
Method for storing data across a number of hard
disk drives to achieve data redundancy
None
None
$
Disk drive failure
Snapshots
Point-in-time logical image of a physical volume
Hours
Minutes
$$
Logical data loss or corruption
Volume Copy
Complete physical and independent copy of a
volume
Hours-Days
Minutes
$$$
Logical& local data loss or
corruption
Split Mirroring
Continuously mirrored copy of a volume. Can
be split into a separate volume.
None Minutes
Minutes
$$$
Logical & local data loss or
corruption
Remote Snapshot
Replication
Remote snapshots of a primary volume
Hours Days
MinutesHours
$$$
Local or wide-area disasters
Asynchronous
Replication
Replication of data to one or more
geographically remote systems.
Minutes Hours
MinutesHours
$$$$
Local or wide-area disasters
SecondsMinutes
MinutesHours
$$$$
Local or wide-area disasters
None
MinutesHours
$$$$
Local-area disasters
Feature
Function
RAID
Protection
 I/O to primary volume buffered and propagated to remote
volume based on threshold policy
Semisynchronous
Replication
Replication of data to one or more
geographically remote systems.
Synchronous
Replication
Replication of data to one or more
geographically remote systems.
 I/O to primary volume propagated to remote volume after
sending host acknowledgement
 I/O to primary volume propagated to remote volume before
sending host acknowledgement
Backup
Traditional tape-based
DaysWeeks
Hours Days
$$
Archive
Traditional tape-based
-
DaysWeeks
$$
Local or wide-area disasters (w/
vaulting)
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AssuredSnapの利点
無視できないビジネスへのインパクト ;
オペレーションとファイナンシャル
•
Reduce Backup Windows
 From hours to seconds
•
•
Improve Application &
Data Availability
Reduce Business Impact
 Customer-facing application
availability
•
Risk Mitigation
 Meeting Backup Windows
 Application Availability
 Customer Satisfaction, Loyalty
and Retention
 Lost Business/Lost Revenue
 Financial Viability
Page 11
Follow-on Webinar Series
Snapshot Applications
•
•
•
•
Introduction to Snapshots
Reducing Data Loss and Improving Data Recovery Times
Reducing Backup Windows
Data Management – Offloading Workloads
www.dothill.com
Page 12
AssuredSnap
Questions?
Snapshot 2
2:00 PM
1:00 PM
Volume 1
Active File System
Rollback Volume:
Volume reverts back
Snapshot 1
To the point in time
The snapshot was
created
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