Em 01-09-2011 17:41, Austin Godber escreveu: > > =================== tw_cli info c2 ============================ > > Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache > AVrfy > ------------------------------------------------------------------------------ > u0 RAID-5 OK - - 64K 6519.19 OFF > OFF I have the same controller on Centos 5. Did you try to active Cache on 3ware? [17:56:04 root at backup ~]# lspci | grep 3ware 01:00.0 RAID bus controller: 3ware Inc 9650SE SATA-II RAID PCIe (rev 01) [17:56:11 root at backup ~]# tw_cli /c4 show Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-5 OK - - 64K 5587.9 RiW ON In the past I had a scenario where I started with Cache OFF and had a poor performance, specially for write. After set Cache RiW I got better performance. I didn't test that controller on CentOS 6, but is good to know if there is some problem, because my company sells equipment with that controller. Best regards, -- Marcelo Beckmann Suporte Corporativo - suporte at webers.com.br Webers Tecnologia - http://www.webers.com.br Curitiba (PR) (41) 3094-6600 Rio de Janeiro (RJ) (21) 4007-1207 São Paulo (SP) (11) 4007-1207