Copying files > Snapshot > I/O Error

[To-M]

May you please try and get back with me. We have many VMware users working with our iSCSI products including DSS.

[ms-net]

Hi,

i Have tried ISCSI - it works fine :-)
Snapshots and copying large files during a snapshot are No Problem :-)
Thank you!

But I've poor performance.
With CIFS I have 9 MB/s on a 100 M/Bit Network.
With ISCSI I have only 2 MB/s on a 100 M/Bit Network with the same hardware.

What have i done wrong?

all the best, Markus

[To-M]

Actually CIFS and SMB (SAMBA) are slower then NFS or FTP for file protocols, so this would almost be ok for a 100MB NIC, best would be 12MB /s. For iSCSI this is slow - could mean something on the initiators end or the host system. Allot can cause poor performance, slow drives, CPU, RAM, switch.... please experiment as you should be higher higher then this by 4x. Try another system with 1GB NIC's on both.