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petrtoth
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Problem low speed replication VM

Post by petrtoth » Aug 26, 2013 7:48 am

Hi,

I have upgraded version 6.5 to 7.0 RC0 and than 7.0.
Before upgrade on 7.0 i have done replication of 1,5 TB machine with OS Linux by using incremental replication and it has took aproximatley 31 minutes. Now replication is taking approx. 125min and i can't get more than 45MB/s of processingrate.

Source machine is on SAN field where are FC disks. Target machine is alson on SAN field with SAS disks 15k rpm.

Veem is installed on physicall machine and using two proxies which are virtually in Vmware ESX 5.1

OS which is replicated is virtuall HW 7.0 and linux. While replication is started message "Hot add is not supported for this disk, falling over to network mode (Hard disk 2)" is shown. Virtual machine with same size (1,5TB) with OS windows is replicated in approx. 16 min.

Do you have any idea where could be the problem ?

Thanks for any advice.
Sincerely.

v.Eremin
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Re: Problem low speed replication VM

Post by v.Eremin » Aug 26, 2013 8:26 am

Has Hot Add method been used previously or not? Were there any environmental changes that might have led to absence of Hot Add mode? Also, are the in-guest virtual disks of VM in question configured as IDE instead of SCSI? Thanks.

petrtoth
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Re: Problem low speed replication VM

Post by petrtoth » Aug 26, 2013 11:23 am

I'm not sure whether there was Hot Add available at linux server. All other windows servers have it available. Except upgrading veeam 7 there was no changes. Hosted VM has ISCI disks.

I'm not sure whether i understood all of your questions.

Thanks

v.Eremin
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Re: Problem low speed replication VM

Post by v.Eremin » Aug 26, 2013 11:32 am

You can check it by going to job statistics of job runs that occurred prior to VB&R upgrade. The idea is that previously backup proxy server has leveraged Hot-Add transport mode that typically is faster than a network one and it doesn’t use it any longer.

Additionally, it stands to reason to check whether CBT is being used or not.

Thanks.

foggy
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Re: Problem low speed replication VM

Post by foggy » Aug 26, 2013 11:47 am

Additionally, there are several limitations of using hotadd mode outlined in the following KB article: http://www.veeam.com/KB1054, worth reviewing.

petrtoth
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Re: Problem low speed replication VM

Post by petrtoth » Aug 29, 2013 6:35 am

Hi,

Thank you fo your advice. I have proceeded this way:

1) I have checked the CBT settings on VM which i'm replicating.
2) Deleted created cbt files on not running VM
3) Deleted all snapshots
4) Manually set source and target proxy
5) Turned replication on and Hot add function is already functional for disks which are mapped to proxy.

But..

time on replication (incremental) is 1:45h and new warning has came up:

"29.8.2013 6:21:19 :: Cannot use CBT: Soap fault. A specified parameter was not correct. . deviceKeyDetail: '<InvalidArgumentFault xmlns="urn:internalvim25" xsi:type="InvalidArgument"><invalidProperty>deviceKey</invalidProperty></InvalidArgumentFault>', endpoint: ''"

and

"29.8.2013 6:31:01 :: Cannot use CBT: Soap fault. Error caused by file /vmfs/volumes/51b988f7-ff2082a0-2b20-1cc1de1dc5e8/Prytanis_sk/Prytanis2_sk_1-000024.vmdkDetail: '', endpoint: ''"


I have added some images to attachment, if they could help

http://magico.galerie.cz/#94878188
http://magico.galerie.cz/#94878189

Thanks

foggy
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Re: Problem low speed replication VM

Post by foggy » Aug 29, 2013 7:46 am

Petr, I suggest reviewing this topic for a possible solution and contact technical support directly in case this doesn't help. Thanks.

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