CIFS multi point performance issues
2017-07-20 06:19 AM
FAS 2552 with additional shelf Running ONTAP 9.1P2 (24x2 disk 10k SAS)
2 Heads 1 10G per head
FAS 2552 <> 16port 10G NetApp switch <> 10G Trunk <> CISCO 3850X SW (48p 1G 2x10G) <> several servers at 1G
Servers are 2012r2, clients Windows 10 (all 1G connections from the same switch hosting the 10G trunk to NetApp sw)
I'm fairly new to CDOT and have limited experiance with network storage.
My issue is that the CIFS share on this device are caping out at about 1G throughput. IE Server1 starts a file copy from the share at full Gig speeds, Server2 begins copying from it and the transfer rate drops to half a Gig for each. I can copy from multiple NetApps at full 1G each but am unable to get any NetApp share to exceed 1G througput.
To isolate this to a CIFS issue I had three servers and the FAS conect with ISCSI. After creating three LUNS and connecting them to three physicaly seperate servers on the same switch, I observed 3 seperate full 1Gig connections simultainous.
The network should be capable of pushing around 10 1G connections through that trunk port as it did for the ISCSI connection, not sure what to look at next.
This is our current "vserver cifs options show" with advanced priv set.
Vserver: svm1 Client Session Timeout: 900 Copy Offload Enabled: true Default Unix Group: - Default Unix User: pcuser Guest Unix User: - Are Administrators mapped to 'root': true Is Advanced Sparse File Support Enabled: true Direct-Copy Copy Offload Enabled: true Export Policies Enabled: false Grant Unix Group Permissions to Others: false Is Advertise DFS Enabled: false Is Client Duplicate Session Detection Enabled: true Is Client Version Reporting Enabled: true Is DAC Enabled: false Is Fake Open Support Enabled: true Is Hide Dot Files Enabled: false Is Large MTU Enabled: true Is Local Auth Enabled: true Is Local Users and Groups Enabled: true Is NetBIOS over TCP (port 139) Enabled: true Is NBNS over UDP (port 137) Enabled: false Is Referral Enabled: false Is Search Short Names Support Enabled: false Is Trusted Domain Enumeration And Search Enabled: true Is UNIX Extensions Enabled: false Is Use Junction as Reparse Point Enabled: true Max Multiplex Count: 255 Max Same User Session Per Connection: 2050 Max Same Tree Connect Per Session: 4096 Max Opens Same File Per Tree: 800 Max Watches Set Per Tree: 100 Is Path Component Cache Enabled: true NT ACLs on UNIX Security Style Volumes Enabled: true Read Grants Exec: disabled Read Only Delete: disabled Reported File System Sector Size: 4096 Restrict Anonymous: no-restriction Shadowcopy Dir Depth: 5 Shadowcopy Enabled: true SMB1 Enabled: true Max Buffer Size for SMB1 Message: 65535 SMB2 Enabled: true SMB3 Enabled: true SMB3.1 Enabled: true Map Null User to Windows User or Group: - WINS Servers: - Report Widelink as Reparse Point Versions: SMB1