Slow Backup performance

[alessio.71]

Hello,
i've a 3 node cluster with 3 networks :
LAN / Ring0 / Storage

The Storage network is used for a NFS storage dedicated to backup
On switch (HP) i reserved a "closed" VLAN with 4 ports, one for each node and one for NAS

I'm experiencing very slow performances : about 8/MBs
No Jumbo frame
The second nas interface is connected to LAN for management
650gb backup takes about 15h to complete

Thanks for any idea

Alessio

 

[menk]

hi alessio, can you try other protocol for backup on your nas?
like a samba share....

 

[alessio.71]

Hi Menk, thanks for reply

it's a try i will do
but, for security i preferr not to use smb protocol

by the way, i think i've made some fault, i've to study more

 

[alessio.71]

OK, with SMB/CIFS better performances but non costant in data transfer it goes from 40 MB/S to 0M/Bs
Attacched the Seagate performance monitor

 

[menk]

but what is the backup target??
Can you try a test from another device??

 

[alessio.71]

Hello Menk,
The target is a Seagate NAS OS dual core 1,2Ghz 512Gb ram (a dirty s**t 26Mb/s )
Tomorrow i put freenas on my old server (xeon)
i'll use the nas for disaster recovery over rsync

 

[menk]

I think your Nas can be the bottleneck....
A better Nas (dyi can a good choice) can give more performance.
For nfs try to mount with async option...
Give us your feedback

 

[alessio.71]

Update:
Today i build i backup machine
xeon 8core
24gb ram
WD red 2TB
freenas

• 2 shares
  
  • xxx : nfs
  • yyy : cifs

Results :

• nfs : about 25 MB/s
• cifs : write 512 Mb at 100 Mbs, then wait some time, the restart with high speed copy (up and down, up an down )

I think that now is to investigate more

any idea ?

follow the backup log (in progress)

INFO: status: 0% (450494464/618475290624), sparse 0% (100065280), duration 3, read/write 150/116 MB/s
INFO: status: 1% (6218579968/618475290624), sparse 0% (328941568), duration 189, read/write 31/29 MB/s
INFO: status: 2% (12373590016/618475290624), sparse 0% (439513088), duration 393, read/write 30/29 MB/s