Extremely fast processing to deliver the MAXIMUM performance€¦ · Tweaking Veeam Agent backup...
Transcript of Extremely fast processing to deliver the MAXIMUM performance€¦ · Tweaking Veeam Agent backup...
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Extremely fast processing to deliver the MAXIMUM performance
Vyacheslav Kuznetsov
Customer Support Analyst
Petr Makarov
Technical Support Engineer
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Step 1
Veeam settings
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Options: Network traffic rules
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Options: I/O control
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Proxy affinity
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Gateway server
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Job settings
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Changed block tracking
For physical environment:
Veeam® Agent for Microsoft Windows —two mechanisms:1. Veeam native CBT driver 2. Parsing MFT
Veeam Agent for Linux — Veeam proprietarykernel module
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Detecting bottleneck
Step 2
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Job statistics window
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Job statistics window
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VMware backup infrastructure
VMware hostVeeam Backup Server
VMware proxyRepository
Storage
Datastore
Proxy
Source Network
Sourcedata mover
Targetdata mover
Target
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Bottleneck source (VMware)
NBD mode:
1. Storage read performance
2. Host load
3. Network connection betweenVMware host and proxy
VeeamBackup Server
VMwareproxy
Storage
VMware host
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Bottleneck source (VMware)
Hot-Add mode:
1. Storage read performance
2. Host load
VeeamBackup Server
Storage
VMware host
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Bottleneck source (VMware)
Direct storage access:
1. Storage read performance
2. Connection betweenstorage and proxy
VeeamBackup Server
Storage
VMware host
VMwareproxy
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Bottleneck source (VMware)
Storage snapshot:
1. Storage snapshot read performance
2. Connection betweenstorage and proxy
VeeamBackup Server
Storage
VMware host
VMwareproxy
StorageSnapshot
LUN
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Advanced data fetcher
Transport mode Read method ADF available
Storage snapshots WinAPI
Hot-Add WinAPI
Direct NFS NFS
Direct SAN VDDK read
Network (nbd) VDDK read
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Hyper-V 2016 performance scheme
Hyper-V host Veeam Backup Server
Repository
Source storage
Source Network
Proxy Target
Backup storage
Volume
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Hyper-V off-host mode: Hardware provider
Hyper-V host Veeam Backup Server
Repository
Source storage
Source Network
Proxy Target
Backup storage
VolumeVolume Snapshot(Hardware provider)
Hyper-V Off-host proxy
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Physical server to Veeam backup repository
Physicaldrive
Physical server
Source
Proxy
Sourcedata mover
Target datamover
Network
Target
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Physical server to USB disk or share
Physicaldrive
Physical server
Source
Proxy
Sourcedata mover
Target datamover
Network Target
Backupstorage
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Tweaking Veeam Agent backup performanceControlling process and IO priority in Veeam Agent for Microsoft Windows:
HKLM\SOFTWARE\Veeam\Veeam Endpoint Backup
EndPointAgentPriority (REG_SZ)
Values: Normal, Low, Background (default)
Controlling IO in Veeam Agent for Linux:
/etc/veeam/veeam.ini
[backup]
ioRateLimit= 0.9 (default)
Values range: 0.01-1.0, where 0.01 - very slow, 1.0 - no limit
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Read performance troubleshooting
1. Storage read performance:
https://kb.vmware.com/kb/1008205
2. Connection between storage and proxy:
ESXTOP metrics for virtual proxy:
• CMDS/s• DAVG/cmd• KAVG/cmd• GAVG/cmd (DAVG/cmd + KAVG/cmd)
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Proxy settings: Concurrent tasks
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Bottleneck proxy: Compression
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Compression levels comparison
Dedupe-friendly (rle) Optimal (lz4) High (zlib) Extreme (zlib high)
22 GB12 GB 9.70 GB 9 GB
0
10
20
30
40
50
60
70
80
90
100
0
50
100
150
200
250
300
Tim
e,
se
co
nd
s
Time, seconds
Size, GB
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Bottleneck network
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Bottleneck network
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WAN acceleration
• Link latency — tweak upload streams number• SSD disks for Global Cache are not necessary — async read
• VM restore points• Global Cache
WAN
Backup copy jobSource
WAsTarget
WA Global cache
VM Restorepoints
Source backuprepository
Target backuprepository
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1 2
3 4
5
1’ 2’
6
Steps:1. Write new block
to storage
Forward incremental mode, active full
TargetData Mover
One IO per block
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Reverse incremental mode
1 2
4
5
1’ 3’
6
3Target
Data Mover
Steps:1. Read old block from VBK
2. Write old block to VRB
3. Write new block to VBK
Three IOs per block
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1 2
3 4
5
1’ 2’
6
Forever forward incremental
Steps:1. Read block from VIB
2. Write block to VBK
Two IOs per block
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Transform previous chain into rollbacks
1
3 4
56
2’
2
1’
Steps:1. Read old block from VBK
2. Write old block to VRB
3. Read new block from VIB
4. Write new block to VBK
Four IOs per block
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1 2
3 4 1’ 2’
5
1’’ 3’
5’ 6
3’
6
1’’2’4
5’
Synthetic full
Steps:1. Read block from VIB
2. Write block to VBK
Two IOs per block
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1 2
3 4 1’ 2’
5
1’’ 3’
5’ 6
3’
6
1’’ 2’
4
5’
ReFS: Synthetic full
Steps:1. ReFS command
to map block
Zero IOs per block
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Synthetic operations using fast merge
Operations: Advantages:
• Significant performance boost• Synthetic full takes almost no
space due to blocks re-usage
https://forums.veeam.com/veeam-backup-replication-f2/refs-4k-horror-story-t40629-945.html
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Backup file fragmentation
Increased by:
Decreased by:
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For deduplication appliances:http://www.vee.am/kb1745
For Microsoft deduplication:http://www.vee.am/kb2023
Deduplication storages: Pros and cons
VEEAM BEST PRACTICES:
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Benchmark test
Step 3
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IPerf
Usage:
https://goo.gl/qdcuxw
Test scenarios:
• Network connectivity between servers
• iSCSI bandwidth
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IPerfSteps:
1. Start Iperf on backuprepository, server role
2. Start Iperf on backupproxy, client role.Start the test
3. Compare test resultswith Veeam jobperformance,bottleneck network
Test results:• 24 Mb\sec = 3 MB\Sec
• (24\8 = 3)
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VixDiskLib sample
Transport modes to benchmark:
• VMware NBD
• VMware Direct SAN
Tool options:
• Readbench (Source: Backup, replication)
• Writebench (Target: VM restore, replication)
Usage: https://goo.gl/e3tL6y
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Diskspd
Use cases:
• Troubleshooting VAW source performance• Troubleshooting Hyper-V source performance
• Troubleshooting storage-integration source performance
• Direct NFS mode
• Troubleshooting repository performance:
• Slow backup (all chain modes and synthetic operations)
• Slow restore, SureBackup®
Usage:http://vee.am/kb2014
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Diskspd
Available benchmark targets with diskspd:
• Local drive on Windows machine: C:\backup
• CIFS\SMB share: \\repository\backup
• iSCSI\FC mounted disk or snapshot. Raw device access: #X
• NFS datastore: Should be mounted using Client for NFS
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DiskspdSteps:
1. Run diskspd to testread speed from mounted device
2. Compare test resultswith Veeam jobperformance
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Other tools for benchmarksLinux targets: • FIO: https://goo.gl/sxnVoJ
Data Domain:• DDP connection checker manual:
https://support.emc.com/kb/334991• Download link: ftp://nwc:[email protected]
Hewlett Packard Enterprise StoreOnce:• You can get it from Veeam support ☺
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Collecting advanced performance statistics
Use cases:
• Slow read from storage snapshots• Slow read in Hot-Add• Slow synthetic operations• Slow WAN accelerator processing
• Benchmark test result differ from Veeam processing rate
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Parsing performance statistics sample output
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Step 4
The final step
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Maxing out performance
Bottleneck Backup performance Restore performance
Source• Choose the fastest read mode for
your infrastructure• Decrease backup file fragmentation• Use faster repository
Proxy
• Tweak concurrent tasks number• Play with compression• Add more proxies• Add more resources to a proxy
• Increase backup block size• Playing with compression• Adding resources to a proxy
Network• Increase number of upload streams• Backup copy with WA• Preferred network for backup
• Increase number of upload streams
Target• Incremental chain mode• VBK per VM
• VMWare: Choose the fastest mode• HV or physical: Wait ☺
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Session summary
Analyze jobstatistics
Run benchmark
test
Collect perfdatawith support team
(optimal)
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Thank you
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