Help With Slow Backup

[trentmdawson]

Hi Guys,

I am currently developing a DR solution for my business and need some input to what i am doing. Veeam is extremely slow backing up and im not sure why. I'm getting around 3/4MB transfer rate which is too slow on a VM that is 1.27TB.

Throughput should be over 100MBPS.

I have the following setup:

2 ESX Hosts
1 SAN connected via 4GBPS Fibre running a mix of SAS/SATA in R5/10 config.
vSphere 4.1 Update 1 Standard Edt
Gigabit Network

1 Virtual Backup Server - 4 CPU, 4GB RAM (Backup Storage Located On This VM)
1 Virtual Backup Proxy - 2 CPU, 4GB RAM

Are there any principles that i should follow that i'm missing in the configuration?

[Gostev]

Bottleneck statistics we provide clearly shows your weak spot. What are the percent busy numbers you are observing?

[J1mbo]

Where is the backup storage physically located - and what is it?

Also, what is the overall CPU core (not thread) count in the host?

[trentmdawson]

Backup storage is located on my EMC AX4 SAN using SATA in R5 Configuration. This is presented to the host by adding it as a datastore from the VM

Am i presenting the storage wrong?

I have a 8 x 2.92GHZ (Dual Core 16)

3/08/2012 10:59:30 AM :: Load: Source 15% > Proxy 72% > Network 8% > Target 93%
2/08/2012 5:37:15 PM :: Busy: Source 14% > Proxy 68% > Network 17% > Target 87%
2/08/2012 4:20:24 PM :: Hot add is not supported for this disk, failing over to network mode...

[AlexL]

some quick thoughts:
a) network mode is the slowest mode, look into that
b) seems that most time is spend at the target, slow destination storage, not using raid5 on sata are you because that kills performance

[J1mbo]

Agree R5 is pretty outdated BUT that shouldn't in itself cause such a pathetic rate. Check the AX4 has write-cache enable for that LUN. Also assign less vCPU to the backup server (start with 1 and monitor it). Looking at the proxy stats, is best compression selected by chance?

Personally I prefer network mode as it's simpler and performance is more than adequate, for my needs anyway.

[Gostev]

Are you using reversed-incremental backup mode?