Gigabit Backup Speed

[ITGURU]

is there any other way to increase the backup speed over gigabit network apart from upgrading to 10 GB?

 

I'm backing up 1.1TB and I can get the first 800GB of data backed up in 4.5 hours as the data is local storage on the server that the tape drive is installed on as speed gets upto 5000MB/Minute.

 

For the remainder of the backup this then takes another 5 hours to backup 300GB of data, and all servers have LACP teamed links (4 x 1GB), however during the backup, it seems to only get to a maximum transfer speed of 1500MB/min.

 

Can I expect anything higher than this?

[FN-GM]

The problem with LCAP its not an exact science. Also it load balances based on one of the following:

Source IP

Source Mac

Destination IP

Destination Mac.

 

Depending on your configuration change one of those and it might improve the performance.

[smithson83]

Our nightly onsite backup takes ~ 6 - 8 hours to backup 1.5TB, its recently gone slow, used to be <6hrs

[ITGURU]

The problem with LCAP its not an exact science. Also it load balances based on one of the following:

Source IP

Source Mac

Destination IP

Destination Mac.

 

Depending on your configuration change one of those and it might improve the performance.

 

All servers are 2012 R2 and have tried both Static Teaming and Switch independent, and now they're set to LACP and LACP configured on the switches.

if I do a straight file transfer between systems it maxes out the connection at 800MB/sec., but during the backup it appears to run steady at 200MB/s.

[Steve21]

Remember that even with teaming you'll only use 1 link at once for a single process (read "switch"), so if it's a single connection it'll use 1 line, if it's 3 connections it'll use 3 etc

 

Might want to have a flick through this Windows Server 2012 NIC Teaming Part 4 – Load Distribution | Aidan Finn, IT Pro

 

Steve

[ITGURU]

Remember that even with teaming you'll only use 1 link at once for a single process (read "switch"), so if it's a single connection it'll use 1 line, if it's 3 connections it'll use 3 etc

 

Might want to have a flick through this Windows Server 2012 NIC Teaming Part 4 – Load Distribution | Aidan Finn, IT Pro

 

Steve

 

Yep, came across that website, and aware it will only use a single stream. Just seems a bit strange how the backup throughput is lower than if copying directly.

[Steve21]

Yep, came across that website, and aware it will only use a single stream. Just seems a bit strange how the backup throughput is lower than if copying directly.

 

As in copying raw files? Say 1000 lil ones? If so they would each use a different stream, thus splitting across 4 lines.

 

If it's just 1 large file that would be strange

 

Steve

[ITGURU]

As in copying raw files? Say 1000 lil ones? If so they would each use a different stream, thus splitting across 4 lines.

 

If it's just 1 large file that would be strange

 

Steve

 

When doing general file copying of small files it is using all 4 connections. general file copying through windows (lots of small files) generally averages 200-400mb/s so guess that's about right for backup at 1600MB/min.

[Michael]

At that kind of volume, are doing full or incremental backups every evening? Incremental will vastly reduce backup times.

[ITGURU]

At that kind of volume, are doing full or incremental backups every evening? Incremental will vastly reduce backup times.

 

FULL backup every night. - I can cope with a 10 hour backup at the moment as have a 12 hour window.