Hello,
I have DSS 6 lite installed in a hp box (smartarray 641, 5 scsi HDDs in raid5, dual XEON 3GHZ, 3GB RAM)
I have configured a volume group.
Inside the volume group I have an iScsi volume in File i/o (160GB, initialized) and a NAS volume (100GB)
this box is connected to my Storage LAN using the integrated Broadcom NIC.
The iSCSI volume is used by my vmware cluster (2 hosts) and is vmfs formatted
The NAS volume is shared on my network
If I copy data from a windows box to the NAS volume I have a performance of about 10MB/sec
If I copy data from the ESX hosts to the iSCSI volume (if I migrate a virtual machine for example) I have a performance of 3MB/sec
Reading from the iSCSI volume gives same performance than reading from SAN Volume.
If have tried many combinations of iscsi target parameters.
I have another linux box with SCST in fileio and same target parameters of e-open than outperforms open-e writing data.
any idea?