Topic: backup2ws - Throughput to WS?

[rf131]

Hi There,

Just curious... what kind of speed have those using this backup method seen?  I don't have a benchmark, but right now at first shot I'm getting around 300-400 kb/sec (just eyeballing size on the ws in w$ explorer.  I installed the dmay custom ISO and nothing has been tweaked yet.  Good job on the ISO dmay!

If any of you could kindly let me know what you are seeing I would appreciate it.

My config is:
WS
2.4GHz PIV
145GB External USB Hard Drive (Seagate Barracuda, 7200 RPM)
Server
Dell PowerEdge 500SC
Dual 80GB 7200 RPM EIDE in RAID 1 (can't remember the mfr or model)

I may just share the internal hard drive to see what kind of difference there is.

TIA,
Kevin

WHOA!!!!

Noticed that my second RAID volume is rebuilding, so who knows how that affects the backup job.  CPU utilization is consistently at 90-95%.

I'll croak the job now and wait for the rebuild to complete and then try it.

I'm still interested in throughput numbers if you would be so kind.

Kevin

[Smitro]

Hi,

I'm not exactly sure what you did to find the exact through put, but my machine at home whenever it is backing up to it. the link is 100mb/s but in Windows task manager I noticed the network is running at about 7 - 9% while a backup is in progress. If I look at the server usage durring a backup it never seems to go above 50%. (sitting more around the 40-50 mark).

I would be interested to see if there is a way to speed this up, as a backup can take more than a couple of hours (around 10 - 15 GB of data)

Server:
Dual P3 1.2ghz
512mb Ram
120gb WD hdd

Workstation:
AMD 2400+
1gb Ram
80gb WD hdd
WinXP

Smitro.

[rf131]

Well,

The results were not impressive.  Even after the RAID rebuild, I still only got about 400k/sec.  This is not sufficient throughput for my application.

Has anyone set up a locally-attached USB disk using backup2ws?  I know this sounds wierd, but unless there are ways to speed up the process across the network, I don't see any other way.

Perhaps someone with a little more experience can chime in here.

Kevin

[dmay]

From the server-manager Backup to workstation or USB panel:

Enter the compression level from 0 (none) to 5 (maximum). Default is 3. Selecting 0 disables compression which dramitcally improves backup speed.

What is your compression level? Have you tried disabling compression?

A lot depends on your server hardware and network infrastructure. In environments that have a fast processor, loads of ram and 1GB nics & switches, I see overnight backup speeds >1GB/min (with compression 3) going to networked 1GB nic workstations. This is even faster when going to directly connected server USB drives.

Darrell

[slicknic]

Hi,

I have the same slow speed with backup2ws. Usually takes 1 hour per gig. I am running SME 6.01 on a PIII 600Mhz with 384MB RAM. This is at home so it is not a stressed box.

One of the issues could be that most of my data is JPG's or MP3 which are already compressed....

 I do not see an option in the panel for adjusting the compression ratio. I am using the following rpm smeserver-backup2ws-0.0.1-20.noarch.rpm.  What is the best version to use now on my SME version.

Thanks
Nick

[rf131]

A lot depends on your server hardware and network infrastructure. In environments that have a fast processor, loads of ram and 1GB nics & switches, I see overnight backup speeds >1GB/min (with compression 3) going to networked 1GB nic workstations. This is even faster when going to directly connected server USB drives.

Darrell,

How do you configure for a directly-connected USB drive?  This would be my preferred setup, as I wouldn't have to invest in additional network hardware.
I would also like information about where to initiate a mount / umount command.  Then the users (I'm off-site) can just pull the drive at designated times and put another one on.  I tried to work through this earlier, but ran into confusion (mine) with all this template stuff.  I'm sure it makes perfect sense to an SME guru.

I'll do some tweaking of the compression setting and test more.

Thanks for the response.

Kevin

[rf131]

Darrell,

Tried it with compression off.  Much better.

I did a backup of:
/bin,/boot,/dev,/etc,/home

For a total of 650MB.  It took two minutes.

I think I can live with that.

What are the typical directories for:
     - Regular backup?
     - 911?
When I tried the regular backup a few days ago, I think I had one in the list that got me in a loop.

Kevin