after running the open-e DSS for over two years now, sind 2-3 weeks I got a performance issue. The problem is, I cannot describe since when this issue really exists.
I made all the updates for DSS on a regularly basis. Actually, all my six clients freeze or dump during the access to the NAS server. Copying of 20GB takes longer than 3 hours. There are a lot of "breaks" during the copy process, anyway it continues copying afterwards. Again, I had no problems before.
The server uses a Hardware RAID 5, with 3ware 9550SXU-4LP. The Write Cache is activeted. Rebuild/Migrate Rate and Verify Rate are set to "Faster I/O". StorSave is set to Perfofmance.
Firmware of the 3ware card is Linux 2.6.25.13-oe32.
Firmware of open-e DSS is 5.0.DB49000000.3278
Does anyone have any idea what could have happen to my network/dss/3ware card?