HDDs <=> SCSI controllers

В общем случае - изучай /proc/scsi/

Например, для Intel SCSI RAID это /proc/scsi/gdth/*

У меня там только два файла: device_info (который везде одинаковый) и scsi:

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: WDC WD740ADFD-00 Rev: 21.0
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi4 Channel: 00 Id: 00 Lun: 00
  Vendor: AMCC     Model: 9550SX-12  DISK  Rev: 3.04
  Type:   Direct-Access                    ANSI SCSI revision: 03

сам спросил, сам ответил? scsi0 / scsi4 , смотри в dmesg какой из них какой scsiX

Так у тебя 3ware ;) Иди на www.3ware.com и скачивай CLI к твоему контроллеру, операционке и битности.

tw_cli /c0 show all
/c0 Driver Version = 2.26.06.002
/c0 Model = 9650SE-8LPML
/c0 Memory Installed  = 224MB
/c0 Firmware Version = FE9X 3.08.02.005
/c0 Bios Version = BE9X 3.08.00.002
/c0 Monitor Version = BL9X 3.05.00.002
/c0 Serial Number = L326021A7100463
/c0 PCB Version = Rev 032
/c0 PCHIP Version = 2.00
/c0 ACHIP Version = 1.90
/c0 Number of Ports = 8
/c0 Number of Units = 1
/c0 Number of Drives = 8
/c0 Total Optimal Units = 1
/c0 Not Optimal Units = 0
/c0 JBOD Export Policy = off
/c0 Disk Spinup Policy = 1
/c0 Spinup Stagger Time Policy (sec) = 1
/c0 Auto-Carving Policy = off
/c0 Auto-Carving Size = 2048 GB
/c0 Auto-Rebuild Policy = on
/c0 Controller Bus Type = PCIe
/c0 Controller Bus Width = 4 lanes
/c0 Controller Bus Speed = 2.5 Gbps/lane

Unit  UnitType  Status         %RCmpl  %V/I/M  Stripe  Size(GB)  Cache  AVrfy
------------------------------------------------------------------------------
u0    RAID-6    OK             -       -       64K     1396.92   ON     OFF

Port   Status           Unit   Size        Blocks        Serial
---------------------------------------------------------------
p0     OK               u0     232.88 GB   488397168     9QE48E6C
p1     OK               u0     232.88 GB   488397168     9QE49CXV
p2     OK               u0     232.88 GB   488397168     9QE48E7D
p3     OK               u0     232.88 GB   488397168     9QE48EBX
p4     OK               u0     232.88 GB   488397168     9QE48HTX
p5     OK               u0     232.88 GB   488397168     9QE48JD3
p6     OK               u0     232.88 GB   488397168     9QE48J29
p7     OK               u0     232.88 GB   488397168     9QE49CXH

Name  OnlineState  BBUReady  Status    Volt     Temp     Hours  LastCapTest
---------------------------------------------------------------------------
bbu   On           Yes       OK        OK       OK       0      xx-xxx-xxxx