We have been running Samba for several years, recently V2.0.7 on Solaris 7 but just upgraded to V2.2.7 on Solaris 8. The servers are linked to Cisco switches via gigabit adapter and all UNIX and Windows clients are on 100/Full. We have a mixture of AIX, Solaris, NT and 2000 clients We deal the typical Word/Excel/PowerPoint files but also have very large CAD files, 50MB to 2GB. We have never used Samba to serve these larger files because of performance reasons, instead we used Hummingbird Maestro NFS Client on NT/2000. The download speed to UNIX clients has never been a problem and typically works out to be about 5-8MB/sec I did some benchmarks this past week and using NFS the client took 38 seconds to upload a 288MB file to the server while Samba took 82 seconds! Download was, nfs - 50 seconds, Samba - 60 seconds, for the same file. My issue now is that I to get rid of Maestro. I have tried different settings of SO_SNDBUF and SO_RCVBUF, varying from 4096 to 32768, with no net change in speed. Is this just inherent in the smb protocol versus nfs, which is what I have been lead to believe from previous sysadmins? How can I make Samba as fast as NFS? [global] workgroup = EXCOENG netbios name = MARS netbios aliases = PHOBOS security = DOMAIN encrypt passwords = Yes password server = trident, rodeo log level = 1 log file = /var/samba/logs/log.%m max log size = 500 name resolve order = host wins bcast deadtime = 15 lpq cache time = 30 socket options = TCP_NODELAY IPTOS_LOWDELAY lock dir = /var/samba/locks pid directory = /var/samba/locks write list = administrator printer admin = administrator print command = echo Printing %s at %p >> /tmp/print.log; /usr/ucb/lpr -P %p %s; rm %s [Eng_share] comment = Engineering data path = /data1/Eng_share read only = No create mask = 0664 force create mode = 0664 directory mask = 0775 force directory mode = 0775 Graeme Walker System Administrator Exco Engineering