I'm having speed problems with the SCSI card we're using to do tape backup. It seems to be functioning in 16 bit mode and the current thinking is that perhaps it's using a legacy driver instead of the correct one. The Adaptec site has a 'driver' for RHEL5 which I've downloaded and tried to install but it seems to have a problem installing on a CentOS-5 system. [root at hcnas modules]# cd /proc/scsi [root at hcnas scsi]# cat scsi Attached devices: Host: scsi0 Channel: 00 Id: 08 Lun: 00 Vendor: DP Model: BACKPLANE Rev: 1.05 Type: Enclosure ANSI SCSI revision: 05 Host: scsi0 Channel: 02 Id: 00 Lun: 00 Vendor: DELL Model: PERC 5/i Rev: 1.03 Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 06 Lun: 00 Vendor: CERTANCE Model: ULTRIUM 2 Rev: 1914 Type: Sequential-Access ANSI SCSI revision: 03 Host: scsi1 Channel: 00 Id: 06 Lun: 01 Vendor: DELL Model: PV-124T Rev: 0043 Type: Medium Changer ANSI SCSI revision: 02 Host: scsi3 Channel: 00 Id: 00 Lun: 00 Vendor: Dell Model: Virtual CDROM Rev: 123 Type: CD-ROM ANSI SCSI revision: 02 Host: scsi4 Channel: 00 Id: 00 Lun: 00 Vendor: Dell Model: Virtual Floppy Rev: 123 Type: Direct-Access ANSI SCSI revision: 02 [root at hcnas scsi]# ll total 0 dr-xr-xr-x 2 root root 0 Aug 3 13:21 aic79xx -r--r--r-- 1 root root 0 Aug 3 13:21 device_info -r--r--r-- 1 root root 0 Aug 3 13:21 scsi dr-xr-xr-x 2 root root 0 Aug 3 13:21 sg dr-xr-xr-x 2 root root 0 Aug 3 13:21 usb-storage [root at hcnas scsi]# cd aic79xx/ [root at hcnas aic79xx]# ll total 0 -rw-r--r-- 1 root root 0 Aug 3 13:09 1 -rw-r--r-- 1 root root 0 Aug 3 13:09 2 [root at hcnas aic79xx]# cat 1 Adaptec AIC79xx driver version: 3.0 Adaptec 39320A Ultra320 SCSI adapter aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 101-133Mhz, 512 SCBs Allocated SCBs: 4, SG List Length: 128 Serial EEPROM: 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x17c8 0x09f4 0x0142 0x2807 0x0010 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0xffff 0x0430 0xb3f3 Target 0 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 1 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 2 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 3 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 4 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 5 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 6 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Goal: 3.300MB/s transfers Curr: 3.300MB/s transfers Channel A Target 6 Lun 0 Settings Commands Queued 29 Commands Active 0 Command Openings 1 Max Tagged Openings 0 Device Queue Frozen Count 0 Channel A Target 6 Lun 1 Settings Commands Queued 20 Commands Active 0 Command Openings 1 Max Tagged Openings 0 Device Queue Frozen Count 0 Target 7 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 8 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 9 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 10 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 11 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 12 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 13 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 14 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) Target 15 Negotiation Settings User: 320.000MB/s transfers (160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit) [root at hcnas ~]# rpm -e a320raid-3.00.063.5.V580A1-1 [root at hcnas ~]# rpm -ivh a320raid.rhel5.i686.rpm Preparing... ########################################### [100%] 1:a320raid ########################################### [100%] Adaptec adp94xx driver installer - V1.2.5934.0-1 Backing up all modified files to /boot/adp94xx-backup-3 Using GRUB configuration If this is not what you want, rename your /boot/grub/grub.conf file /boot -rw------- 1 root root 2403411 Jul 27 14:47 initrd-2.6.18-8.1.8.el5.img /boot/vmlinuz-2.6.18-8.1.8.el5 /boot/initrd-2.6.18-8.1.8.el5.img CentOS (2.6.18-8.1.8.el5) Configuration [CentOS (2.6.18-8.1.8.el5)] /boot/vmlinuz-2.6.18-8.1.8.el5 -> 2.6.18-8.1.8.el5 ****** PROBLEM ******* No prebuilt module for 2.6.18-8.1.8.el5 i686 ********************** /boot -rw------- 1 root root 2403318 Jul 27 07:39 initrd-2.6.18-8.el5.img /boot/vmlinuz-2.6.18-8.el5 /boot/initrd-2.6.18-8.el5.img CentOS (2.6.18-8.el5) Configuration [CentOS (2.6.18-8.el5)] /boot/vmlinuz-2.6.18-8.el5 -> 2.6.18-8.el5 ****** PROBLEM ******* No prebuilt module for 2.6.18-8.el5 i686 ********************** *************************************** ******** NO MODULES INSTALLED ********* *************************************** Done. error: %post(a320raid-3.00.063.5.V580A1-1.i686) scriptlet failed, exit status 1 [root at hcnas ~]#