information life cycle management in caché
DESCRIPTION
ILM implementation for Caché databases at Partners HealthcareTRANSCRIPT
Walter Halvorsen, Partners Healthcare System, Inc.
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Why do we need ILM?
Walter Halvorsen, Partners Healthcare System, Inc.
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Caché Database Growth
20002001
20022003
20042005
20062007
20082009
2010 (pro
jected)
2011 (pro
jected)
0
2000
4000
6000
8000
10000
12000
14000
Caché Production GB in Use
Walter Halvorsen, Partners Healthcare System, Inc.
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Disk space is cheap, right?
Walter Halvorsen, Partners Healthcare System, Inc.
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Caché Enterprise Platform Storage Issues
• Cost – Top-tier storage– Enterprise-class software licenses– Compounding effect of production copies
• Backup duration• Duplicate backups of static data• Maintenance and recovery• Current model unsustainable
Walter Halvorsen, Partners Healthcare System, Inc.
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Compounding Effect
Factor: 19 X Raw storage
Production (usable)
Backup Business Contin-uance Volumes
QA
DEV
Reporting
SRDF (DR)
Daily backup disks
Walter Halvorsen, Partners Healthcare System, Inc.
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0
500
1000
1500
2000
2500
3000
3500
4000
% Utilization *50Downtime (minutes/year)Administration (hours/year)
50%
95%90%
85%
60%70%
80%
Storage Utilization Implications
Walter Halvorsen, Partners Healthcare System, Inc.
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Risk and % Utilization
0
10
20
30
40
50
60
70
80
90
100
% Utilization
Walter Halvorsen, Partners Healthcare System, Inc.
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Production Data File Systems
/s2db1
/s2db10
/s2db11
/s2db12
/s2db13
/s2db14
/s2db15
/s2db16
/s2db17
/s2db18
/s2db19
/s2db2
/s2db20
/s2db21
/s2db22
/s2db23
/s2db24
/s2db3
/s2db4
/s2db5
/s2db6
/s2db7
/s2db8
/s2db9
0
50
100
150
200
250
300
350
400
450
500
Available GB% Utilization
Average Utilization:
72 %
Walter Halvorsen, Partners Healthcare System, Inc.
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Information Life Cycle Management (ILM)
• Policy-based approach to managing data• Purge/retention criteria• Backup criteria• Performance criteria• Migration of data to different storage tiers• Age-based tiering of data
Walter Halvorsen, Partners Healthcare System, Inc.
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ILM Benefits
• Reduce costs• Reduce backups (backup static data once)• Reduce compounding effect of Production
data• Improve performance for highest data tier
Walter Halvorsen, Partners Healthcare System, Inc.
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Data Criteria for ILM Policies
Data Type Clinical Data Filing Characteristics Modifiable
Record Yes Numeric Sequential Yes
Index No Numeric Non-Sequential No
Message (XML or HL7) Alphabetic
User Data
Session Data
Audit
Diagnostic
Scratch
Other
Walter Halvorsen, Partners Healthcare System, Inc.
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ILM Policies
1. Purge2. Retier to lowest tier with no backup, then
delete3. Retier to lowest tier with backup4. Retier to middle tier, then lowest tier5. Keep on highest tier
Walter Halvorsen, Partners Healthcare System, Inc.
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Data Migration Among Storage Tiers
RAID-1 15K RPM
$$$
RAID-5 10K RPM
$$
RAID-6 7.2K RPM
$
Tier 1 Tier 2 Tier 3
Walter Halvorsen, Partners Healthcare System, Inc.
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ILM Implementation
• Global mappings to datasets• Policies applied on a per dataset basis• New global mappings added during ISM
outage events (only two per year!)• Migration of clinical data during an ISM• Migration of non-clinical data outside of ISM• Need advance notice of large storage projects
Walter Halvorsen, Partners Healthcare System, Inc.
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$4,080,373$3,338,933
$741K Savings over 5 Years