Hello.

We have a Netware 6.5 SP8 server with 8 GB RAM running under VmWare ESXi 5.1
U1. The ESXi Host was now upgraded to SSD disk. The disk performance inside
the Netware 6.5 is bad while the perfomance inside a W7 machine is really
fast.

VMwareguest Netware 6.5 SP8 disk performance (read or write) is about 18MB/s
(tested with CC Commander, local copy between two nss netware volumes)
VMwareguest Windows 7 disk performance (read or write) is above 230 MB/s

What can I do to boost up the Netware 6.5. disk performance ?

Netware 6.5 was migrated from physical to virtual using Portlock
storagemanager.

The used disk driver is: LSIMPTNW.HAM 5.02 5 Dec 2007

VMware tools are running. No antivirus tool runs on Netware 6.5. SP8

Here are the NSS parameters:
Enable checking of the execute bit OFF Detailed information
NSS Out Of Disk Space Alerts ON Detailed information
Mount ISO 9660 multi disc set as one CDDVD volume OFF Detailed information
NSS Loads UDF-bridge CD as ISO9660 volume OFF Detailed information
NSS Auto Locks CD-DVD Disc in device OFF Detailed information
NSS Leaves CD-DVD Volume Objects in NDS OFF Detailed information
NSS Auto Update CD-DVD Volume Objects To NDS OFF Detailed information
Emulate Classic NetWare Directory Quotas OFF Detailed information
Number of buffers reserved per Encrypted Volume 50 Detailed information
NSS Work To Do Count ** 50 Detailed information
NSS Maximum Cache Balance Buffers Per Session 1024 Detailed information
NSS Cache Balance Timer 30 Detailed information
NSS Cache Balance Percent 85 Detailed information
NSS Cache Balance Enable ON Detailed information
NSS Buffer Flush Timer 1 Detailed information
NSS Minimum OS Cache Buffers 256 Detailed information
NSS Minimum Cache Buffers 512 Detailed information
NSS File Flush Timer 10 Detailed information
NSS Closed File Cache Size 100000 Detailed information
NSS Auth Cache Size ** 1024 Detailed information
NSS ASCII Name Cache Enable ** ON Detailed information
NSS Name Cache Enable ** ON Detailed information
NSS Name Cache Size 100000 Detailed information
NSS Low Volume Space Alerts ON Detailed information
NSS Low Volume Space Warning Reset Threshold 15 Detailed information
NSS Low Volume Space Warning Threshold 10 Detailed information
NSS Above 4 Gig Memory Percent ** 80 Detailed information

Any suggestions for troubleshooting?

Thanks,
Michael