Solved

ShadowProtect Backup Very Slow

Posted on 2012-03-17
6
2,653 Views
Last Modified: 2012-04-07
I'm trying to backup an iSCSI volume (about 1.5TB) attached to a Windows Server 2008 R2 virtual machine (on Hyper-V), but every time I kick off the seed the backup starts running at about 800KBps and says it's going to take 21 days to complete.

If, however, I just copy a 46GB file from the iSCSI volume and just paste it to the share on the BDR (also Server 2k8 R2), it runs at 80+MBps solid. In other words, I can't seem to replicate the problem outside of ShadowProtect. I have already tried some suggestions about disabling TCP Checksum Offload on both the VM NIC and host NIC, but it hasn't made a difference. And help is greatly appreciated -
0
Comment
Question by:ajahnke
  • 3
  • 2
6 Comments
 
LVL 12

Expert Comment

by:S00007359
ID: 37735353
are you trying to backup the "iSCSI volume (about 1.5TB)" from the hyper-v host. or is the shadowprotect installed in the guest os.
0
 

Author Comment

by:ajahnke
ID: 37735460
ShadowProtect is installed on the guest OS, which has exclusive access to the iSCSI volume.
0
 
LVL 12

Expert Comment

by:S00007359
ID: 37735537
so it's like a Raw Device mapping. how big are the luns.
has the backup ever worked before.

trying backup up a 1tb volume.

where is it backing up to.
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 36

Expert Comment

by:Jian An Lim
ID: 37735568
check with storagecraft support, they are helpful.

One thing they will ask which is the disk spin when the shadowprotect running.
0
 

Accepted Solution

by:
ajahnke earned 0 total points
ID: 37797509
I'm going to close this ticket - I had already reached out to ShadowProtect support, who finally got back to me with the lousy response of "ShadowProtect doesn't work with anything other than local, internal storage". This of course seemed ludicrous to me - how then am I supposed to use this 'industry leading' software to backup iSCSI volumes? I asked them that and they just chose not to respond. I did enable multiple threads on the job, however, which took the time from 21 days down to 5-6. The job eventually completed and now the incrementals are able to complete as usual, even under the adverse conditions.
0
 

Author Closing Comment

by:ajahnke
ID: 37818690
There was no real solution to the problem - enabling multiple threads seemed to help, but for some reason this type of backup isn't supported by StorageCraft.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is an update and follow-up of my previous article:   Storage 101: common concepts in the IT enterprise storage This time, I expand on more frequently used storage concepts.
Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
This tutorial will walk an individual through the process of configuring basic necessities in order to use the 2010 version of Data Protection Manager. These include storage, agents, and protection jobs. Launch Data Protection Manager from the deskt…
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now