Рассмотрим утилиту управления массивами arcconf на базе RAID контроллера Adaptec.
Смотрим логические разделы (LUN)
# arcconf getconfig 1 ld
Controllers found: 1
----------------------------------------------------------------------
Logical device information
----------------------------------------------------------------------
Logical device number 0
Logical device name : a0
RAID level : 5
Status of logical device : Optimal
Size : 40950 MB
Stripe-unit size : 256 KB
Read-cache mode : Enabled
Write-cache mode : Enabled (write-back)
Write-cache setting : Enabled (write-back) when protected by battery
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : Yes
Failed stripes : No
--------------------------------------------------------
Logical device segment information
--------------------------------------------------------
Segment 0 : Present (0,24)
Segment 1 : Present (0,25)
Segment 2 : Present (0,26)
Segment 3 : Present (0,27)
Segment 4 : Present (0,28)
Segment 5 : Present (0,29)
----------------------------------------------------------
Logical device number 1
Logical device name : a1
RAID level : 5
Status of logical device : Optimal
Size : 4725745 MB
Stripe-unit size : 256 KB
Read-cache mode : Enabled
Write-cache mode : Enabled (write-back)
Write-cache setting : Enabled (write-back) when protected by battery
Partitioned : Yes
Protected by Hot-Spare : No
Bootable : No
Failed stripes : No
--------------------------------------------------------
Logical device segment information
--------------------------------------------------------
Segment 0 : Present (0,24)
Segment 1 : Present (0,25)
Segment 2 : Present (0,26)
Segment 3 : Present (0,27)
Segment 4 : Present (0,28)
Segment 5 : Present (0,29)
Данный LUN включает в себя следующие сегменты
Segment 0 : Present (0,24)
Segment 1 : Present (0,25)
Segment 2 : Present (0,26)
Segment 3 : Present (0,27)
Segment 4 : Present (0,28)
Segment 5 : Present (0,29)
Пары (0,25) (0,26) (0,27) и тд, это ни что иное как (Channel#,IDDevice#)