oracle zfs storage appliance for exadata backup & · pdf file1 oracle zfs storage...
TRANSCRIPT
![Page 1: Oracle ZFS Storage Appliance for Exadata Backup & · PDF file1 Oracle ZFS Storage Appliance for Exadata Backup & Recovery Husnu Sensoy Global Maksimum Data & Information Technologies](https://reader034.vdocuments.net/reader034/viewer/2022042503/5a703a587f8b9aa2538bcf20/html5/thumbnails/1.jpg)
1
Oracle ZFS Storage Appliance for Exadata Backup & RecoveryHusnu SensoyGlobal Maksimum Data & Information Technologies
Friday, December 14, 12
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Husnu Sensoy
• Chief VLDB Specialist in Global Maksimum Data & Information Technologies
• Oracle ACED in BI domain
• Oracle Magazine DBA of the Year 2009
2
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• Three strategic areas we focus on
• Complex Event Processing
• Oracle CEP
• Making 500 different business decisions for 1.2 Millions of events in a second
• Data Mining
• Oracle Data Mining and Oracle R Enterprise Edition
• Churn Prediction Models for Telcos
• Marketing Target Selection Models
• Large scale data analytics (what people say Big Data)
• Ten billion rows in a week
• Exadata
• 120+ TB Exadata migration from UNIX systems.
• Exadata Master Class all over the EMEA region for Exadata customers, Oracle partners, and Oracle at the region.
3
Global Maksimum Data & Information Technologies
Just focus on Data & Information in it...
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Backup & Recovery Challenges of Exadata
Environments
4
• RMAN still does not provide a mechanism to compress image backups
• No footprint optimized way to store multiple copies of the same data
• RAC node utilization during ternary backup
• Backup replication to remote site
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ZFS Storage Appliance
5
10.000 feet...
Hardware
ZFS
Oracle Solaris
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ZFS Hybrid Storage Pool
6
A Combination of different skills
Application
ZFS Hybrid Storage Pool
ZIL L2ARC Pool
Write SSDs Read SSDs HDDs
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RMAN Incrementally Updated Backup Strategy
7
Byte by byte copy of your Exadata
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RMAN Incrementally Updated Backup Strategy
7
Byte by byte copy of your Exadata
Image backup/Backupset Level 0
One Week Ago
run {RESTORE DATABASE FROM TAG WEEKLY_FULL_BCKP;
}
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RMAN Incrementally Updated Backup Strategy
7
Byte by byte copy of your Exadata
Image backup/Backupset Level 0 #1 #2 #3 #4
One Week Ago Three Days Before
Now
run {RESTORE DATABASE FROM TAG WEEKLY_FULL_BCKP;
}
run {[SET UNTIL SCN x|SEQUENCE x|TIME ‘x’]RECOVER DATABASE FROM TAG DAILY_INC_BCKP;
}
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RMAN Incrementally Updated Backup Strategy
7
Byte by byte copy of your Exadata
Image backup/Backupset Level 0 #1 #2 #3 #4
One Week Ago Three Days Before
Now
Recovery Range
run {RESTORE DATABASE FROM TAG WEEKLY_FULL_BCKP;
}
run {[SET UNTIL SCN x|SEQUENCE x|TIME ‘x’]RECOVER DATABASE FROM TAG DAILY_INC_BCKP;
}
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Storage Overhead of Image Copies
8
ZFS Storage File System Level Compression
One problem with using incrementally updated backup strategy is that RMAN does not provide a mechanism to compress image copies.
But ZFS provides a file system level compression mechanism
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Compression
9
ZFS Compression vs RMAN Compression over uncompressed data
0
25
50
75
100
None LZJB GZIP L1 GZIP L4 GZIP L9
ZFS Compression
0
25
50
75
100
None LOW MEDIUM
RMAN Compression
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Flexibility to Travel in Time
10
ZFS Compression can let you to keep multiple image copies ?
Image #1 #1 #2 #3 #4
One Week Ago
Last Night
Now
One Month Ago Two Weeks Ago
#5 #6 #7 #8 #9 #30…#10 #11 #12 #13 #14 #15
Image #2 #8 #9 #30…#10 #11 #12 #13 #14 #15
Image #3 #30…
Image #4 #30
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Flexibility to Travel in Time (Con’t)
11
ZFS Compression can let you to keep multiple image copies ?
No matter how much you compress, keeping multiple copies of your database is not a clever idea in terms of utilizing your ZFS Storage Appliance.
ZFS has a solution to that problem also: Deduplication
þ
Assume a database of size 10 TB with a daily of 500 GB. By previous slide I wish to store:•1 Full + 1 incremental = 10.5 TB•1 Full + 7 incremental = 13.5 TB•1 Full + 15 incremental = 17.5 TB•1 Full + 30 incremental = 25 TB•Total of 63.5 TB
This value theoretically can be reduced to •1 Full + 30 incremental = 25 TB using deduplication
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Replication with ZFS Appliance
12
Painless Data Replication
Exadata
ZFS Storage Appliance
ZFS Storage Appliance DR
Exadata DR TernaryStorage
LAN/WAN
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Optimizing Ternary Backups
13
Silent Tape Backup by NDMP
Exadata
ZFS Storage Appliance
TernaryStorage Exadata
ZFS Storage Appliance
TernaryStorage
NDMPSnapshot
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Configuration &
Management Tips
14
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ZFS Storage Configuration & Management Best
Practices
15
• ZFS Storage Share Configuration
• Remove Update access time on read attribute.
• Do not use cache devices for neither metadata nor data caching.
• Set Synchronous write bias to Throughput
• Ensure that your ZFS Database record size is 128K
• Design multiple shares differentiated depending on their characteristics
• Cleanup unused snapshot & clones.
• Ensure that you use DNFS client.
• Keep in mind that deduplication & ZFS compression require extra CPU power.
• Use RMAN compression whenever possible unless you have a bottleneck on Exadata RAC nodes.
• Prefer LOW or MEDIUM for performance
• To utilize backup parallelism use SECTION option for BIGFILE tablespace data files
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16
Monitoring Performance using Oracle Storage Analytics
Keep your eyes on 3 metrics
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17
Monitoring Performance using SQL
Query RMAN Catalog Views
set linesize 5000 column filename format a50set pagesize 64
select bai.inst_id, bai.sid, bai.status, buffer_count, trunc((sysdate - open_time) * 24 * 60,2) elaps, substr(filename, instr(filename, '/',1,3)+1) filename, nvl(effective_bytes_per_second, (bytes / ((sysdate - open_time) * 24 * 3600))) / 1024 / 1024 mb_per_sec, to_char(bytes / 1024 / 1024,'09999.99') mb_sofar, to_char(bytes / 1024 / 1024/10.24/32,'999.99') "%", total_bytes / 1024 / 1024 / 1024 total_gb, io_count from gv$backup_async_io bai where bai.type = 'INPUT' and close_time is null order by "%" desc;
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18
Backup Performance
A real value based on previous generation 7410
0
500
1000
1500
2000
Before Tunining +Infrastructure Tuning +Oracle Advanced Compression -‐Index Segments
MB/
s
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Two Real Backup
Strategies using ZFS
Storage Appliance
19
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.• Database size very small with compared to ZFS Storage pool size.
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.• Database size very small with compared to ZFS Storage pool size.
Open Storage7000
FRA
Controlfile AutobackupArchivelogsIncremental
BackupsetsImage Copies
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.• Database size very small with compared to ZFS Storage pool size.
Open Storage7000
FRA
Controlfile AutobackupArchivelogsIncremental
BackupsetsImage Copies
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.• Database size very small with compared to ZFS Storage pool size.
Open Storage7000
FRA
Controlfile AutobackupArchivelogsIncremental
BackupsetsImage Copies
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE;
}
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Simple Design
20
Creating your FRA on ZFS Storage Appliance
• A system already running on NFS or another storage with a comparable performance.
• A single disk copy is sufficient.• Quick recovery from failure is necessary in case of a primary storage loss.• Database size very small with compared to ZFS Storage pool size.
Open Storage7000
FRA
Controlfile AutobackupArchivelogsIncremental
BackupsetsImage Copies
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE;
}
RUN { ALTER DATABASE MOUNT;SWITCH DATABASE TO COPY;RECOVER DATABASE;ALTER DATABASE OPEN;
}
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
Open Storage7000
FRA
Image Copies
INC
Incremental Backupsets
ARCH
Archivelogs
LZJB
DEDUP
LZJB
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
Open Storage7000
FRA
Image Copies
INC
Incremental Backupsets
ARCH
Archivelogs
LZJB
DEDUP
LZJB
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
Open Storage7000
FRA
Image Copies
INC
Incremental Backupsets
ARCH
Archivelogs
LZJB
DEDUP
LZJB
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;
}
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
Open Storage7000
FRA
Image Copies
INC
Incremental Backupsets
ARCH
Archivelogs
LZJB
DEDUP
LZJB
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;
}
RUN { ALTER DATABASE MOUNT;RESTORE DATABASE FROM TAG ‘DAILY_BACKUP’RECOVER DATABASE;ALTER DATABASE OPEN;
}
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Advanced Design
21
Multiple Image Copies for Multiple Recovery Points
• Quick recovery using SWITCH is not an option• Two recovery capabilities are necessary
• To Just now• To somewhere in last week
• ZFS Storage pool is at comparable size with production size.
Open Storage7000
FRA
Image Copies
INC
Incremental Backupsets
ARCH
Archivelogs
LZJB
DEDUP
LZJB
ALTER SYSTEM SET DB_RECOVERY_DEST=‘/export/fra’;
RUN { RECOVER COPY OF DATABASE WITH TAG ‘DAILY_BACKUP'; BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘DAILY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;
}
RUN { ALTER DATABASE MOUNT;RESTORE DATABASE FROM TAG ‘DAILY_BACKUP’RECOVER DATABASE;ALTER DATABASE OPEN;
}
RUN {SET COMPRESSION ALGORITHM ‘MEDIUM’;RECOVER COPY OF DATABASE WITH TAG ‘WEEKLY_BACKUP‘ UNTIL TIME ‘SYSDATE-7’; BACKUP AS COMPRESSED BACKUPSET INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG ‘WEEKLY_BACKUP‘ DATABASE TO DESTINATION ‘/export/inc’;
}
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Friday, December 14, 12