Comprehensive data protection for all workloads
jbush
Novice
Posts: 4
Liked: 3 times
Joined: Jan 23, 2014 2:09 pm
Full Name: Jason Bush
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by jbush » 3 people like this post

Alright, now that I have the MPIO issue resolved on the production SAN, Dell Equalogic PS4100. Issue was with the Dell Multpath Extension Module.

Anyways, here are the more conclusive results of having autotuninglevel set to normal versus disabled on a VM running Veeam with direct SAN access.

autotuninglevel=normal
Total VM size: 760GB
Processed: 496.2GB
Read: 491.4GB
Transferred: 343.3GB (1.4x)
Total duration: 1h19mins
Processing rate: 115MB/s
Busy: Source: 91% > Proxy 41% > Network 13% > Target 11%

autotuninglevel=disable
Total VM size: 760GB
Processed: 496.2GB
Read: 491.4GB
Transferred: 343.4GB (1.4x)
Total duration: 1h14mins
Processing rate: 123MB/s
Busy: Source: 94% > Proxy 43% > Network 10% > Target 11%

Source server details:
Windows Server 2012 R2
Exchange Server 2013
Disks, 1x60GB, 1x400GB, 1x300GB
vCPU: 6
vRAM: 32GB

Veeam server details:
Server 2008 R2 SP1
Veeam B&R v7.0.0.715
vCPU: 12
vRAM: 32GB
Using MS MPIO for Production iSCSI Fabric, isolated Force10 S25 switches for iSCSI traffic only
Using MS MPIO for Backup iSCSI Fabric, isolated vlan, HP 2920 switch
MTU 9000 across the two fabrics

Production SAN details:
Equallogic PS4100
RAID: RAID50, 3 strips
HDD: 24x 900GB SAS
Controllers: 2x1gbps iSCSI (one controller standby, one active, 2 NICs per controller)
Hardware iSCSI initiator

Backup NAS details:
QNAP 1279U 12bay
RAID: RAID5, 3 strips
HDD: 12x 3TB SATA
Controller: 2x1gbps
Software iSCSI initiator

dellock6
Veeam Software
Posts: 5929
Liked: 1748 times
Joined: Jul 26, 2009 3:39 pm
Full Name: Luca Dell'Oca
Location: Varese, Italy
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by dellock6 »

First of all Jason thanks for posting the results!
Seems like indeed disabling autotuning brings an advantage, but it's a small one. Something to take into account when deciding to disable it or not (better performance vs. default configurations).

Thanks,
Luca.
Luca Dell'Oca
Principal EMEA Cloud Architect @ Veeam Software

@dellock6
https://www.virtualtothecore.com/
vExpert 2011 -> 2020
Veeam VMCE #1

SilentDeath
Novice
Posts: 6
Liked: never
Joined: Apr 25, 2015 12:52 pm
Full Name: JohnDoe
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by SilentDeath »

Hello All,

I'm using Veeam DIRECT SAN access aswell.
The VMware VMDK's are stored on HP Lefthand SAN LUN's.
My back-up jobs run approximately at 55 MB/s.
Last night I modified the autotunig level but this didn't make any difference.
Anyone any idea how I could speed up jobs? I'm storing back-ups locally on back-up server.

Let me copy the template from jbush:
(normal incremental job, active full in weekend)

Processed: 1.2 TB
Read: 49.1GB
Transferred: 18.8 GB (2.6x)
Total duration: 18:55
Processing rate: 55 MB/s
Busy: Source: 99% > Proxy 51% > Network 3% > Target 0%

Veeam server details:
Server 2012 R2 SP1
Veeam B&R v9
CPU: E5-2620 v3 @ 2.40 GHz (6CPUs)
RAM: 32GB
HP Proliant DL380 G9

Production SAN details:
HP LeftHand SAN

Backup NAS details:
Data is stored locally on backup server.

joergr
Expert
Posts: 386
Liked: 39 times
Joined: Jun 08, 2010 2:01 pm
Full Name: Joerg Riether
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by joergr »

Hi,

looking at your data neither the network nor the target is the culprit / bottleneck. Seems to me that your SAN just simply can´t deliver more. See for yourself: Source is at 99%.

Thanks

Joerg

foggy
Veeam Software
Posts: 19465
Liked: 1767 times
Joined: Jul 11, 2011 10:22 am
Full Name: Alexander Fogelson
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by foggy »

What kind of Lefthand device do you have? Wondering if you can use storage snapshots.

PTide
Product Manager
Posts: 5626
Liked: 549 times
Joined: May 19, 2015 1:46 pm
Contact:

Re: Improving direct-from-SAN backup speed with iSCSI SAN

Post by PTide »

Could you please double check if your job utilizes Direct SAN mode and not failing to network mode? You should see something like this

"6/6/2016 2:02:51 PM :: Using backup proxy WIN-LD86G2UPHMK for disk Hard disk 1 [san]" in session log.

Thanks

Post Reply

Who is online

Users browsing this forum: Baidu [Spider], Bing [Bot] and 28 guests