Transcript Slide 1

IBM System i™
Shrinking Your Backup/Recovery Window –
Step by Step
Debbie Saugen
i want stress-free IT.
i want control.
i want an i.
8 Copyright IBM Corporation, 2007. All Rights Reserved.
This publication may refer to products that are not currently
available in your country. IBM makes no commitment to make
available any products referred to herein.
IBM System i
Shrinking the Backup/Recovery Windows
The Big Question:
"How Fast Can I Backup and Recover?"
IBM
Enhanced Capacity
Cartridge
System
TapeTape
Cartridge
System
IBM
IBM
IBM
IBM
IBM
i want an i.
Enhanced Capacity
Cartridge
System
Tape Tape
Cartridge
System
Enhanced Capacity
Cartridge
System
Tape Tape
Cartridge
System
Enhanced Capacity
Cartridge System Tape
Cartridge System Tape
Enhanced Capacity
Cartridge
System
Tape Tape
Cartridge
System
IBM
IBM
Enhanced Capacity
Cartridge System Tape
Cartridge System Tape
Enhanced Capacity
Cartridge
System
Tape Tape
Cartridge
System
IBM
Enhanced Capacity
Cartridge System Tape
Cartridge System Tape
Enhanced Capacity
Cartridge
System
TapeTape
Cartridge
System
© 2007 IBM Corporation
IBM System i
The Answer: "It Depends!"
Factors Influencing Backup/Recovery Performance
• Hardware
– Tape Devices
– Tape Device Attachment Card
– Number of DASD Units Data Spread Across
• Workload Type
– Large Files
– User Mix
– Source Files
– IFS (Domino)
• Data Compression, Data Compaction and Optimum Block Size (USEOPTBLK)
• Main Storage Memory and Pool Sizes
• Save of Access Paths
i want an i.
© 2007 IBM Corporation
IBM System i
Overview of Factors Influencing Save Performance
+
Connection
technology
+
+
Bus and HSL
speed
Target device
technology
+
+
Data Type
(size and
quantity)
CPU and
memory
i want an i.
=
Disk configuration
GB per
hour
saved or
restored
Your save
performance
© 2007 IBM Corporation
IBM System i
The Backup/Recovery Challenge
Minimize backup window
(daily, weekly, etc.)
Minimum complexity
Maximum coverage
i want an i.
Transaction recovery
Minimum recovery time
Minimum complexity
© 2007 IBM Corporation
IBM System i
Shrinking Your Backup/Recovery Windows
•
•
•
•
•
•
•
•
•
•
•
•
Latest Tape Technology
Saving to Save Files
Saving to Virtual Tape (New for V5R4)
SAVSYINF and RSTSYSINF (New for V5R4)
Concurrent/Parallel Save/Restore
Alternatives for Minimal Downtime Saves
– Save-while-active
– External Disk FlashCopy
– High Availability Software
IFS Save/Restore Performance
Online Lotus Servers Backup
Omit Non Critical Data
Archive Historical Data
Reorganize Files
Recovery Enhancements
i want an i.
11
12
1
10
2
3
9
4
8
7
6
5
© 2007 IBM Corporation
IBM System i
Latest Tape Technology
i want an i.
© 2007 IBM Corporation
IBM System i
Tape Options for System i and i5/OS
QIC, VXA,
Half High LTO-2
LTO Family
TS3500
Enterprise
Family
QIC
TS3310
TS3200
VXA
Half High
LTO-2




Low cost
Good capacity
Good speed
SCSI only
i want an i.
TS3100
TS1120
3580
 Low cost
 High capacity
 Fast streaming
operations




High performance
High capacity
Industrial strength
Fast streaming and
start/stop operations
© 2007 IBM Corporation
IBM System i
LTO Ultrium Tape Family
TS3200
3580
3582
TS3500 /
3584
TS3100
3581
Note: TS1030 fibre LTO-3
drives in the TS3500 report as
machine 3588-F3B
TS3310
3583
3580
3581
TS3100
3582
3573-L2U
TS3200
3583
TS3310
3584 / TS3500
Machine Name
3580
3573-L4U
3576
3584
Max # drives
1
1
1
2
2
6
10
192
Max # Cartridges
1
7 or 8 (*)
22+1
24
44+3
72
212
>6200
Partition Capable
No
No
No
Yes
Yes
Yes
Yes
Yes
(Aug 4/06)
LVD Drives
Yes
Yes
Yes
Yes
Fibre Drives
No
2 Gbit
4 Gbit
2 Gbit
i want an i.
Yes
4 Gbit
Yes
2 Gbit
Yes
4 Gbit
Yes
/ No
2 Gbit / 4Gbit
© 2007 IBM Corporation
IBM System i
IBM TS1120 Enterprise Tape (3592-E05)
• Second generation of 3592 Tape
• 100 MB/sec native (compared with 40 MB/sec on 3592-J1A)
• Media Compatibility:
– Can read Gen1 formatted Tapes (300 GB native)
– Can write Gen 1 formatted tapes with June 2006 code/PTFs
– Can reformat Gen1 tapes to Gen2 format (500 GB native)
• Dual 4 Gbit Fibre ports
• Improved reliability and error identification
• RoHS compliant
(Reduction of Hazardous Substances)
• Supports Tape Encryption when used in a
TS3400 or TS3500 (3584) tape library
i want an i.
© 2007 IBM Corporation
IBM System i
New TS3400 Tape Library
• Desktop or Rack Mountable, 2 Drive Library/Autoloader for TS1120
– 4 Gbps fibre channel
– Bar code reader standard
– Supports encryption, WORM
• 2 Removable Cartridge Magazines
– Each holds up to 9 cartridges
• Storage Capacity up to 12.6 TB (up to 25.2 TB with 2:1 compression)
• Ability to Partition into 2 Logical Libraries
– Each Logical library comprised of 1 drive and 1 magazine
– Run any single-drive logical library in either sequential
(autoloader) mode or random (library) mode
• Announced Feb 13, GA March 9
• Supported on System i models 820/830/840, 800/810/825/870/890,
520/550/570/595 running i5/OS V5R3 or later
1TotalStorage
i want an i.
3592 drives are not supported
© 2007 IBM Corporation
IBM System i
Tape Library Comparison
Tape Library
TS3100
TS3200
TS3310
TS3500
TS3400
TS3500
Number of drives
1 LTO
1-2 LTO
1 - 10 LTO
1 - 192 LTO
1-2 TS1120
1 - 192
3592 or
TS1120
Drive data rate
80 MBps
80 MBps
80 MBps
80 MBps
104MBps
104MBps
Max number of
cartridges
22
44
218
6887
18
6260
Max native
cartridge capacity
400GB
400GB
400GB
400GB
700GB
700GB
Native library
capacity
up to
8.8TB
up to
17.6TB
up to
87.2TB
up to
2.75PB
up to
12.6TB
up to 4.3
PBs
No
No
No
No
Yes
Yes
4Gbps FC
160Mbps
SCSI
4Gbps FC
160Mbps
SCSI
4Gbps FC
SCSI-LVD
4Gbps FC
SCSI-LVD
4Gbps FC
4Gbps FC
Encryption
support
Interface
i want an i.
© 2007 IBM Corporation
IBM System i
3590E Save Rates Improve with 8xx Hardware
• Up to 114 GB/hr on iSeries (8xx) Hardware
– PCI DASD - No Migration Tower
– 2749 Tape IOA - No Migration Tower
– Single Drive
– Very Large Files
– 3:1 Compression
• Up to 2.7 TB/hr
– 24-Way Model 8xx
– 24 3590E Tape Drives - 1 per DASD Tower
– Parallel Save Support
– Very Large Files
i want an i.
© 2007 IBM Corporation
IBM System i
3590E Fibre Channel – More Improvement
•
•
•
•
Available Starting with V5R2
Saves Improve - Up to 142 GB/hr
Requires Hardware Upgrade from 3590E
New Fibre Channel Adapters
i want an i.
© 2007 IBM Corporation
IBM System i
3590H Tape Device – Capacity Increase
• Announced July 2002
• 50 Percent Capacity Increase
– 120 GB per cartridge, Increases to 180 GB
• B and E Tape Devices Require Upgrade
• Same Existing Performance as 3590E Tape Devices
– SCSI and Fibre Channel Support
– V4R5 or Higher for SCSI
– V5R2 or Higher for Fibre
• Tape Capability
– Reuses Current 3590 J(Blue) and K(Green) Cartridges
– Read B(*FMT3590) and E(*FMT3590E) Formatted Tapes
• New Format of *FMT3590H
i want an i.
© 2007 IBM Corporation
IBM System i
3592 Tape Device – More Improvement
• 3592 Tape Device
– Announced September 2003
– Brand New Tape Device
• Saves at 40 MB/s or 120 MB/s w/Compression
• Up to 365 GB/hr
• 2765 IOA - 100 MB/s
• New 5704 IOA - 200 MB/s
– New Tape Cartridges
• 300 GB Per Cartridge - 900 GB with 3:1 Compression
• Tape Capability
• Not Compatible with Current 3590 J(Blue) and K (Green) Cartridges
i want an i.
© 2007 IBM Corporation
IBM System i
New Model 3592 Tape Device – More Improvement
• 3592 E05 Tape Device – TS1120
– Fall 2005 (V5R2 and Higher)
– 3494 and 3584 Tape Libraries
– Better Performance
• Saves at 100 MB/s or 260 MB/s w/Compression (3:1)
• 250 MB/s Maximum Performance
• New 5761 IOA (4Gb) – Up to 890 GB/hr
• 5704 IOA (2Gb) - 550 GB/hr
• 2765 IOA (1Gb) – 350 GB/hr
– Tape Cartridges
• 500 GB per Cartridge – 1.5 TB with 3:1 Compression
• Tape Capability
• Uses Existing J1A Cartridges and WORM Media
• New Density of *FMT3592A2
• Reads/Writes J1A Format and New E05 Format
i want an i.
© 2007 IBM Corporation
IBM System i
358X LTO 1 Tape Devices
• LTO (Linear Tape Open) Technology
– Started Shipping December 2000 (V4R4 or later)
– Single Device to Very Large Tape Library
– High Performance, High Capacity - 384 Track
– Lower Cost than 3590
– 100 GB/Cartridge, >300 GB with 3:1 Compression
– New LTO Cartridge -*ULTRIUM Density
• Compatibility
– No Compatibility with Existing Tape Devices
– Full Interchange with 358x Family (IBM and OEM)
i want an i.
© 2007 IBM Corporation
IBM System i
358x LTO 1 Tape Devices
• Better Performance on iSeries (8xx or i5)
– 15 MB/s without Compression, 27 MB/s with Compression, or 97 GB/hr
• Attached via 2749 (iSeries)
– 13 MB/s with Compression or 47 GB/hr
• Attached via 2729 (AS/400e)
– 17 MB/s with Compression or 60 GB/hr
• Attached via 6501/6534 (AS/400e)
i want an i.
© 2007 IBM Corporation
IBM System i
358x LTO 1 Fibre Channel
• Requires Minimum of V5R1
• No Upgrade from SCSI Drives, Brand New Fibre Drives
• Better Performance
– Same as 3590E or 3590H Fibre Channel
– Up to 142 GB/hr
• Single Drive per Adapter at V5R1
• Multiple Drives per Adapter at V5R2
• Multiple Systems may Share Drives using Switches
i want an i.
© 2007 IBM Corporation
IBM System i
358x LTO 2 Tape Devices
• Announced January 2003 (V5R1 or later)
• New Drives, New Media and New Density
• 3580, 3581, 3582, 3583 and 3584 Models
– New Format of *ULTRIUM2
– New Purple LTO Cartridges
– Up to 600 GB per Cartridge with 3:1 Compression
– Up to 95 MB/s or 350 GB/hr with Fibre Channel
– Full Interchange with any LTO 1 Product
• Can Read/Write *ULTRIUM1 Tape Cartridges
– Improved Performance - Up to 40 MB/s with 2:1 Compression
i want an i.
© 2007 IBM Corporation
IBM System i
358x LTO 2 Tape Devices
• Attaches via 6534, 2729, 2749, or 5702 SCSI IOA or 2765 or 5704 FC IOA
– No 6501 Support
• Best Performance on iSeries (8xx)
– 2729 -> 13 MB/s or 47 GB/hr
– 6534 -> 17 MB/s or 60 GB/hr
– 2749 -> 33 MB/s or 115 GB/hr
– 5702 -> 70 MB/s or 250 GB/hr
– 2765 -> 95 MB/s or 350 GB/hr
– 5704 -> 95 MB/s or 350 GB/hr
• 5704 Requires V5R2
• 2 drives - 600 GB/hr
• 5.2 TB/hr with 16 Drives
• INFO APAR II13513
i want an i.
© 2007 IBM Corporation
IBM System i
358x LTO 3 Tape Devices
• *ULTRIUM3 Density
• New Tape Media
– Gray Cartridges
– 400 GB per Cartridge or 1200 GB with 3:1 Compression
– Read/Write *ULTRIUM2 Cartridges
– Read Only *ULTRIUM1 Cartridges
• Performance Improvements
– Up to 140 MB/s or 525 GB/hr with Compression
• Minimum V5R2 Release
i want an i.
© 2007 IBM Corporation
IBM System i
Saving to Savefiles
• Savefile Benchmark Performed in the Most Favorable Environment to Achieve
Maximum Save Rates
– 24-way 840
– 128 GB Main Store
– 1080 DASD Units
– **Performance Rates Achieved will Depend Upon Available Resources
• V5R1 iSeries Save Performance
– 135 GB/hr for User Mix Data
– 170 GB/hr for Large Files
• V5R2 iSeries Save Performance
– 200 GB/hr for User Mix Data
– 480 GB/hr for Large Files
• 2757 IOA DASD
– 250 GB/hr for User Mix Data
– 1000 GB/hr for Large Files
i want an i.
© 2007 IBM Corporation
IBM System i
Virtual Tape Support for i5/OS (New for V5R4)
1
2
3
4
5
6
7
8
9
10
CRTIMGCLG
(2)
Up to 256
virtual tape
volumes
ADDIMGCLGE
(3)
LODIMGCLG
Any ASP or iASP
(4)
CRTDEVTAP
(1)
Virtual
Tape
Device
Save
Restore
Disk
Duplicate to media, switch or
FTP to another system
i want an i.
© 2007 IBM Corporation
IBM System i
Virtual Tape Support for i5/OS
• Key Advantages
– Supported on all Save/Restore Commands and APIs (except SAVSTG)
– Can Be Faster than Saving Directly to Tape
• Similar Performance as Save Files
• Best Performance in Separate ASP
– Eliminates Save File Limitations
• One Library Per Save File
• SAVSYS Not Supported on Save File
• Parallel Saves Not Supported on Save File
• 1 TB Size Limitation on Save File
– Eliminates Media Error Limitations
• Saves Ending Due to Tape Device or Media Errors
• Save-while-active Checkpoint Restriction
– Once Checkpoint Reached Saves Can’t be Restarted
– Duplicate Saves to Media (DUPTAP or DUPMEDBRM)
• When Tape Devices Available at Your Convenience
– Onsite and Offsite Storage
• Keep Virtual Volumes on Systems as Needed
• Keep Duplicated Volumes Offsite
i want an i.
© 2007 IBM Corporation
IBM System i
Virtual Tape Support for i5/OS
• Considerations
– Additional DASD Requirements
– No Install from SAVSYS Virtual Volume
• D-IPL Only from Media
– May Not Be Faster
• Tape Technology
• System Configuration and Environment
– Data Compaction Not Supported
– Data Compression Support
• DTACPR(*YES) Parameter on Save Commands
– Default is *NO
• SNA Low Data Compression
• Significant Performance Impact
i want an i.
© 2007 IBM Corporation
IBM System i
Virtual Tape Support for i5/OS
• Implementation of Virtual Tape
– Included in Base i5 Operating System
– Configures on RACL (Random Access Cartridge Loader) Tape Device
• I/O to Disk instead of Tape Media
• Behaves as Tape Library Mounting Specified Volumes
• Up to 35 Virtual Tape Devices
• Virtual Tape Volumes Support Multiple Optimum Block Sizes
– Compatibility with Tape Devices
– Existing Image Catalog Commands used for Virtual Optical
– Tape Volume Management Interface with iSeries Navigator
– User Interface is Green Screen or iSeries Navigator
– Complete End User Interface & Tape Management with BRMS
• Virtual Volumes Stored as IFS Stream Files
– FTP to Other Servers or Partitions
• Considerations
– Bandwidth
– Management of Transmitted Files
– Disaster Recovery
i want an i.
© 2007 IBM Corporation
IBM System i
TS7510 IBM Virtual Tape Engine
• Separate Cross Platform Virtual Tape Device
– Supported on V5R2 and Up
– Faster Performance than Tape for Small File Saves Only
– Supports Install from SAVSYS Virtual Media
– Disaster Recovery – Duplicate Tapes to Physical Media
• Considerations
– Cost of TS7510 (Separate DASD Device)
– Data Compaction / Data Compression
• Significant Impact on Performance
• TS7510 Redbook
– http://w3.itso.ibm.com/redpieces/abstracts/sg247510.html
i want an i.
© 2007 IBM Corporation
IBM System i
Save/Restore Performance Benchmarks
See Chapter 15 of the Performance Capabilities Reference manual for benchmark details.
1700G
B/hr
This publication can be found at the following url: http://www-03.ibm.com/servers/eserver/iseries/perfmgmt/resource.html
1800
LTO Family
359x Family
1420
GB/hr
1600
Disk
1400
GB per hour
1200
890
GB/hr
1000
525GB
/hr
800
600
350
GB/hr
142
GB/hr
400
365
GB/hr
200
0
LTO2 - fibre
LTO3 - fibre
i want an i.
3590H fibre
3592J fibre
TS1120 (3592E) Savefile on fc
on 4Gbit fibre
2757
Virtual Tape
© 2007 IBM Corporation
IBM System i
Influence of Workload Type
Source
User Mix
Large File
IFS
Domino Linux
(offline) (offline)
Domino Online
Saves .. plan
on 100 GB/hr
on LTO-2
approx
SLOW!
SLOW!
Source f i l es
User Mi x ( 12 G B) Large Fi l e ( 8 G B)
1 Di r / Many O bj
Domi no O f f l i ne
User Mi x ( 3 G B)
Large Fi l e ( 4 G B) Large Fi l e ( 16 G B) Many Di r / Many O bj
Li nux NWS
i want an i.
© 2007 IBM Corporation
IBM System i
Other Hardware Related to Save Performance
CPU Power
Tape Adapters
HSL
User Mix: 1.3 CPUs per tape drive
Large File: 0.5 CPUs per tape drive
5704/5761: 2/4 Gbit fibre
LVD SCSI
Memory
Adapter Placement
HSL
User Mix: 1 GB per save
Large File: ½ GB per save
64 bit slots
High Speed Buses
Disk
HSL Placement
30-50 arms of 15K RPM
disk per tape drive
Spread across HSLs
Add more HSLs if needed
i want an i.
© 2007 IBM Corporation
IBM System i
Faster SAVSYS, Concurrent & Parallel Save/Restore
i want an i.
© 2007 IBM Corporation
IBM System i
Faster SAVSYS Backup
• Omit Parameter on SAVSYS
• Omits SAVCFG and/or SAVSECDTA
– OMIT(*CFG)
– OMIT(*SECDTA)
– OMIT(*CFG *SECDTA)
• Must Run SAVCFG/SAVSECDTA
– Regularly
– System not Required to be in Restricted State
i want an i.
© 2007 IBM Corporation
IBM System i
SAVSYSINF and RSTSYSINF Commands (NEW for V5R4)
• Save System Information (SAVSYSINF) Command Performs a Partial Save of
Data Saved by Save System (SAVSYS) Command
• Cumulative Save Since Last SAVSYS
• Restricted State Not Required
– SAVSYS Requires Restricted State
• Saves
– System Reply List Entries
– Certain System Values
• Some System Values are Not Saved
• Not Required for System Recovery
– Service Attributes
– Network Attributes
– PTFs for 5722SS1 and 5722999 Applied (TEMP or PERM) Since Last
SAVSYS
– All Group PTFs
– All PTF Cover Letters and Loaded PTFs Copied into *SERVICE
i want an i.
© 2007 IBM Corporation
IBM System i
SAVSYSINF and RSTSYSINF Considerations
• Base SAVSYS Required
– SAVSYSINF Not Replacement for SAVSYS
• *ALLOBJ or *SAVSYS Special Authority Required
• Can’t be Used For
– Restoring to Another Existing System
– System Upgrades or Migrations
• Intended for Customers Who
– Can’t Bring System to Restricted State for SAVSYS
– Can’t Take Down Time for SAVSYS
• PTF Save Files Must Remain on System Until Next SAVSYS
– Do Not Run Delete Program Temporary FIX (DLTPTF) Command Unless
• Right Before SAVSYS
• Right After SAVSYS
– Installing PTFs Default is NOT to Restore Save Files
• Change System Default CPYPTF(*YES) on CHGSRVA Command or
• Use CPYPTF(*YES) in INSPTF Command Consistently
• Increases System Recovery Time and Complexity
– SAVSYS and SAVSYSINF Needs to be Recovered
– RSTSYSINF Additional Step per Backup and Recovery Checklists
i want an i.
© 2007 IBM Corporation
IBM System i
SAVSYSINF Backup Strategy
• After Base SAVSYS, Perform these Commands to Save System Changes
– SAVLIB LIB(*IBM)
– SAV OBJ(('/QIBM/ProdData') ('/QOpenSys/QIBM/ProdData'))
UPDHST(*YES)
– SAVSYSINF
• Commands to Save User Data
– SAVSECDTA
– SAVCFG
– SAVLIB LIB(*ALLUSR)
– SAVDLO DLO(*ALL) FLR(*ANY)
– SAV OBJ(('/*') ('/QSYS.LIB‘ *OMIT) ('/QDLS‘ *OMIT) (/‘QIBM/ProdData’
*OMIT) (/’QOpenSys/QIBM/ProdData’ *OMIT)) UPDHST(*YES)
i want an i.
© 2007 IBM Corporation
IBM System i
Add Additional Tape Devices for Concurrent Saves/Restores
Example 1
Job 1
Example 2
Job 2
SAVLIB LIB(*allusr)
OMITLIB(m* n* o*...z*)
DEV(TAP01)
SAVLIB LIB(*allusr)
OMITLIB(a* b* c*...l*)
DEV(TAP02)
3590 x 2
i want an i.
Job 1
Job 2
SAVCHGOBJ(A* B* C*)
LIB(MYLIB))
DEV(TAP01)
SAVCHGOBJ OBJ(M* N*
O*) LIB(MYLIB)
DEV(TAP02)
3590 x 2
© 2007 IBM Corporation
IBM System i
Concurrent Saves and Restores
• Multiple Concurrent Saves against Single Library
– SAVOBJ, SAVCHGOBJ and QSRSAVO API can run Concurrently against
Same Library
– Break Up Large Libraries to Save Concurrently to Multiple Tape Devices
• SAVCHGOBJ OBJ(A* B* C* ...L*) LIB(NAME)
• SAVCHGOBJ OBJ(M* N* O*...Z*) LIB(NAME)
i want an i.
© 2007 IBM Corporation
IBM System i
Concurrent Saves and Restores
• Generic Values on OMITLIB
– SAVLIB/SAVCHGOBJ Support Generic Values on OMITLIB Parameter
– Omit Groups of Libraries: OMITLIB(TEMP*)
– SAVLIB LIB(*ALLUSR) using 2 Tape Devices Concurrently
• SAVLIB LIB(*ALLUSR) OMITLIB(#LIBRARY A* B* ...L*)
• SAVLIB LIB(*ALLUSR) OMITLIB(M* N* ...Z*)
– BE CAREFUL if Switching from Save Menu Options to Save Commands!
• Save Menu Options Default to Save Access Paths
• Save Commands do not Default to Save Access Paths (V5R2 or prior
releases)
i want an i.
© 2007 IBM Corporation
IBM System i
Concurrent Saves and Restores with BRMS
• Run Multiple BRMS Backup Control Groups Concurrently
– Submit Multiple Save/Restore Jobs to Multiple Tape Devices
– Reduces Save/Restore Times
– User Balances the Control Group Data so Jobs end at Same Time
i want an i.
© 2007 IBM Corporation
IBM System i
Add Additional Tape Devices for Parallel Saves and Restores
Job
Job
BRMS Backup Control Group
*ALLUSR
BRMS Backup Control
Group
Large Library
V4
V5
3590 x 4
i want an i.
3590 x 4
© 2007 IBM Corporation
IBM System i
Parallel Saves and Restores
• Parallel Saves (V4R4 and higher)
– Save Large Library, Large Object or List of Large Objects to Multiple Tape
Devices in Parallel
• "Spreads Data across Tapes“
– Improves Save Performance for Very Large Objects
• Not Designed for Small Objects
– IFS Parallel Save and Restore Support (New for V5R4)
– End User Interface with BRMS
– Same Number of Tape Devices on Save "Recommended" for Restore
i want an i.
© 2007 IBM Corporation
IBM System i
Parallel Saves and Restores
• Expanded Parallel Support (V5R1 and higher)
– Special Values *ALLPROD, *ALLTEST, *ALLUSR, *IBM, *ASP01 - *ASPxx
and Generics Supported
– Objects "Spread" at Full Library Level
– Restore of Parallel Saves with Special Values in Serial Restore Mode (One
Tape Device)
• Media Library with Multiple Devices Provides Tape Mounting Automation
– List of Libraries - BRMS Determines Best "Spreading" (Object or Full Library
Level)
i want an i.
© 2007 IBM Corporation
IBM System i
Concurrent and Parallel Saves and Restores
• Shrink Backup/Recovery Windows
– Concurrent Saves and Restores
– Parallel Saves and Restores
– Combination of Concurrent and Parallel
i want an i.
© 2007 IBM Corporation
IBM System i
Alternatives for Minimal Downtime Saves
Save While Active
External Disk
FlashCopy
High Availability
Software
iASP
flash
iASP
•
•
•
Part of i5/OS – no
additional charge
No extra hardware
required
Short Quiesce
required to get
checkpoint
i want an i.
•
•
2nd
Requires
system or
LPAR with additional
disk and software
Short Quiesce or power
off required to make
FlashCopy depending
on the solution
implemented
•
•
•
Requires 2nd system
or LPAR with
additional disk, plus
an HA software
application
Least disruptive tape
backups
Fringe Benefit is the
HA Capabilities
© 2007 IBM Corporation
IBM System i
Save-while-active (SWA)
•
•
•
•
Integrated OS/400 Utility for Save Window Reduction
No Additional Hardware or Software Required
Virtual Point in Time Copy on Individual Objects and Libraries
Allows Granular Restores from Tape as Needed
#2. Checkpoint
complete - object
changes now
allowed.
#1. Start
of save
request.
#3. Unchanged
pages and
copied pages are
saved to tape.
C2
C2
C2
C1
C3
Objects in
memory to be
saved
Get a
checkpoint
(snapshot) of
each object.
Eric Hess/Sue Baker
IBM iSeries ATS 2001
#4. Checkpoint image
completely saved to
media. End of save
request.
C2
C1
C1
C3
C3
x
Original pages
copied to temp
storage before
a change.
i want an i.
#5. Results!
x
x
Copied
pages in
temp
storage are
released.
Objects
on
C1 system
after
save.
C3
Original
objects as
they were
at
checkpoint
are written
to tape.
© 2007 IBM Corporation
IBM System i
Integrated File System (IFS) Performance
• V5R1 and V5R2 Type2 Directories
– Save/Restore Performance Improvement
• Many Directories Containing Few Files
– For Example - OnDemand Product
» 1 File per Directory
» 50 Percent Improvement
• Low Ratio of Directories to Files, No Change
i want an i.
© 2007 IBM Corporation
IBM System i
Online Backup of Lotus Servers
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© 2007 IBM Corporation
IBM System i
Online Backup of Lotus Servers
• Save Domino Lotus Servers While Active
– Starting with V4R4
– No Need to Reach Checkpoint - True Online Backup
– No Ending Server or Replicating to Another Server for Backup
– BRMS Handles Recovery Process
– Allows 24X7 Up Time of Lotus Servers
i want an i.
© 2007 IBM Corporation
IBM System i
Omit Non Critical Data
• Test Data
• Temporary Files
• Performance Data (QMPGDATA)
i want an i.
© 2007 IBM Corporation
IBM System i
Archive Historical Data
• BRMS Advanced Feature
– Archive Objects to Tape Based On
• Age
• Frequency of Use
• Size
– Dynamically Recall Database Files, DLOs and Stream files
i want an i.
© 2007 IBM Corporation
IBM System i
Reorganize Database Files
• REORG Files on Regular Basis
• Reorganize BRMS Files Monthly
– Set STRMNTBRM RGZBRMDB Parameter to *YES
– Available V5R2 or Higher
– Ensure No BRMS Activity During Reorg
i want an i.
© 2007 IBM Corporation
IBM System i
Saves After An IPL
• Save Time Increases up to 30 Percent
• Save-while-active Checkpoint Time May Increase
• Why Longer?
– Paging In of Object Headers
– Additional Processing First Time Objects Touched After IPL
– Even Longer if Previous IPL Abnormal
• Recommendation
– Avoid Saves Immediately After IPL
– Touch Objects Between IPL and Save
• DSPOBJD or DSPFD
i want an i.
© 2007 IBM Corporation
IBM System i
Recovery Performance Enhancements
i want an i.
© 2007 IBM Corporation
IBM System i
Shrinking the Recovery Window
• Dramatic Recovery Performance Improvements on iSeries
– DASD Configuration Add Now 45 - 60 Minutes!!
• Previously 5 - 10 Hours
– Customers with Multiple 3590 Tape Devices using Concurrent/Parallel
Restores Have Seen:
• 32 Hour Full System Recovery Reduced to 12 Hours
• 22 Hour Full System Recovery Reduced to 8 Hours
– Recovery Tip for Save-while-active Saves
• Save Full Objects instead of Changed Objects
• Recovery Time Reduced Restoring Fulls vs. Fulls and Changes
i want an i.
© 2007 IBM Corporation
IBM System i
IFS Restore Performance Improvements (New for V5R4)
•
•
•
•
Internal Code Changes Made to Improve Performance
Utilization of Multiple Threads
System Level Internal Code (SLIC) Optimization Reducing Disk Operations
Refer to V5R4 Performance Capabilities Reference :
http://www-w3.ibm.com/servers/eserver/iseries/perfmgmt/resource.html
i want an i.
© 2007 IBM Corporation
IBM System i
Rapid Recovery for System i
i want an i.
© 2007 IBM Corporation
IBM System i
System i Replication
• ...a Rapid Recovery feature that enables you to replicate your
applications and data
• Can achieve recovery time objectives of minutes
• Protects data to last replicated transaction
IBM Site
Hotsite
Customer
Customer
i want an i.
© 2007 IBM Corporation
IBM System i
System i Replication Options
You can replicate all or part
of your system to a target
system at either a hotsite or
one of your sites.
Customer Site
Customer Site
Customer Site(s)
Customer(s)
Hotsite
Partitioning
Hotsite or Customer
Site
Or you can replicate all or part of
your system to a partition on a
target system at a hotsite.
This solution enables sharing of
resources and achieves a new
price point for replication.
i want an i.
© 2007 IBM Corporation
IBM System i
Remember......Test Your Recovery!!
Test Your Recovery to Ensure Your Recovery
Performance Objectives are Being Met!!
System i Save/Restore Performance Measurements Located at:
http://www-03.ibm.com/servers/eserver/iseries/perfmgmt/resource.html
i want an i.
© 2007 IBM Corporation
IBM System i
Reference Material
i want an i.
© 2007 IBM Corporation
IBM System i
Reference Material
Backup and Recovery; SC41-5304-08 (V5R4)
Backup, Recovery and Media Services; SC41-5345-05 (V5R4)
Backup, Recovery and Media Service for OS/400: A Practical Approach Redbook; SG24-4840
http://www.redbooks.ibm.com/abstracts/sg244840.html
Virtual Tape Redbook; SQ24-7164
V5R4 System i Performance Capabilities Reference; SC41-0607-10
http://www-03.ibm.com/servers/eserver/iseries/perfmgmt/resource.html
BRMS Web Page:
http://www-03.ibm.com/servers/eserver/iseries/service/brms/
i want an i.
© 2007 IBM Corporation
IBM System i
Trademarks and Disclaimers
8 IBM Corporation 1994-2007. All rights reserved.
References in this document to IBM products or services do not imply that IBM intends to make them available in every country.
Trademarks of International Business Machines Corporation in the United States, other countries, or both can be found on the World Wide Web at
http://www.ibm.com/legal/copytrade.shtml.
Intel, Intel logo, Intel Inside, Intel Inside logo, Intel Centrino, Intel Centrino logo, Celeron, Intel Xeon, Intel SpeedStep, Itanium, and Pentium are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both.
Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both.
IT Infrastructure Library is a registered trademark of the Central Computer and Telecommunications Agency which is now part of the Office of Government Commerce.
ITIL is a registered trademark, and a registered community trademark of the Office of Government Commerce, and is registered in the U.S. Patent and Trademark
Office.
UNIX is a registered trademark of The Open Group in the United States and other countries.
Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United States, other countries, or both.
Other company, product, or service names may be trademarks or service marks of others.
Information is provided "AS IS" without warranty of any kind.
The customer examples described are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual
environmental costs and performance characteristics may vary by customer.
Information concerning non-IBM products was obtained from a supplier of these products, published announcement material, or other publicly available sources and
does not constitute an endorsement of such products by IBM. Sources for non-IBM list prices and performance numbers are taken from publicly available information,
including vendor announcements and vendor worldwide homepages. IBM has not tested these products and cannot confirm the accuracy of performance, capability, or
any other claims related to non-IBM products. Questions on the capability of non-IBM products should be addressed to the supplier of those products.
All statements regarding IBM future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only.
Some information addresses anticipated future capabilities. Such information is not intended as a definitive statement of a commitment to specific levels of performance,
function or delivery schedules with respect to any future products. Such commitments are only made in IBM product announcements. The information is presented here
to communicate IBM's current investment and development activities as a good faith effort to help with our customers' future planning.
Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any
user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage
configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput or performance improvements
equivalent to the ratios stated here.
Prices are suggested U.S. list prices and are subject to change without notice. Starting price may not include a hard drive, operating system or other features. Contact
your IBM representative or Business Partner for the most current pricing in your geography.
Photographs shown may be engineering prototypes. Changes may be incorporated in production models.
i want an i.
© 2007 IBM Corporation