I backuped ALL , almost 3TB.
I tryed test on CentOS again.
Oh, sorry > everyone.

on CentOS . I misread message size. CentOS had initialized only 0.3GB (2nd array 2.5TB).
CentOS initialized only 286079MB on 2.5TB.
every linux have same situations for me.

I paste  dmraid -ay -vvv -d
 
 pdc_cdfjcjhfhe   :1st array 2.0TB
  pdc_cdgjdcefic  :2nd array 2.5TB

sudo dmraid -ay -vvv -d (ubuntu 10.4 x64)
WARN: locking /var/lock/dmraid/.lock
NOTICE: /dev/sdc: asr     discovering
NOTICE: /dev/sdc: ddf1    discovering
NOTICE: /dev/sdc: hpt37x  discovering
NOTICE: /dev/sdc: hpt45x  discovering
NOTICE: /dev/sdc: isw     discovering
DEBUG: not isw at 1500301908992
DEBUG: isw trying hard coded -2115 offset.
DEBUG: not isw at 1500300827136
NOTICE: /dev/sdc: jmicron discovering
NOTICE: /dev/sdc: lsi     discovering
NOTICE: /dev/sdc: nvidia  discovering
NOTICE: /dev/sdc: pdc     discovering
NOTICE: /dev/sdc: pdc metadata discovered
NOTICE: /dev/sdc: sil     discovering
NOTICE: /dev/sdc: via     discovering
NOTICE: /dev/sda: asr     discovering
NOTICE: /dev/sda: ddf1    discovering
NOTICE: /dev/sda: hpt37x  discovering
NOTICE: /dev/sda: hpt45x  discovering
NOTICE: /dev/sda: isw     discovering
DEBUG: not isw at 1500301908992
DEBUG: isw trying hard coded -2115 offset.
DEBUG: not isw at 1500300827136
NOTICE: /dev/sda: jmicron discovering
NOTICE: /dev/sda: lsi     discovering
NOTICE: /dev/sda: nvidia  discovering
NOTICE: /dev/sda: pdc     discovering
NOTICE: /dev/sda: pdc metadata discovered
NOTICE: /dev/sda: sil     discovering
NOTICE: /dev/sda: via     discovering
NOTICE: /dev/sdb: asr     discovering
NOTICE: /dev/sdb: ddf1    discovering
NOTICE: /dev/sdb: hpt37x  discovering
NOTICE: /dev/sdb: hpt45x  discovering
NOTICE: /dev/sdb: isw     discovering
DEBUG: not isw at 1500301908992
DEBUG: isw trying hard coded -2115 offset.
DEBUG: not isw at 1500300827136
NOTICE: /dev/sdb: jmicron discovering
NOTICE: /dev/sdb: lsi     discovering
NOTICE: /dev/sdb: nvidia  discovering
NOTICE: /dev/sdb: pdc     discovering
NOTICE: /dev/sdb: pdc metadata discovered
NOTICE: /dev/sdb: sil     discovering
NOTICE: /dev/sdb: via     discovering
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: not found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: not found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: not found pdc_cdgjdcefic
DEBUG: _find_set: not found pdc_cdgjdcefic
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: not found pdc_cdgjdcefic
NOTICE: added /dev/sdc to RAID set "pdc_cdfjcjhfhe"
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: found pdc_cdgjdcefic
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: found pdc_cdgjdcefic
NOTICE: added /dev/sda to RAID set "pdc_cdfjcjhfhe"
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdfjcjhfhe
DEBUG: _find_set: found pdc_cdfjcjhfhe
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: found pdc_cdgjdcefic
DEBUG: _find_set: searching pdc_cdgjdcefic
DEBUG: _find_set: found pdc_cdgjdcefic
NOTICE: added /dev/sdb to RAID set "pdc_cdfjcjhfhe"
DEBUG: checking pdc device "/dev/sda"
DEBUG: checking pdc device "/dev/sdb"
DEBUG: checking pdc device "/dev/sdc"
DEBUG: set status of set "pdc_cdfjcjhfhe" to 16
DEBUG: checking pdc device "/dev/sda"
DEBUG: checking pdc device "/dev/sdb"
DEBUG: checking pdc device "/dev/sdc"
DEBUG: set status of set "pdc_cdfjcjhfhe" to 16
DEBUG: checking pdc device "/dev/sda"
DEBUG: checking pdc device "/dev/sdb"
DEBUG: checking pdc device "/dev/sdc"
DEBUG: set status of set "pdc_cdgjdcefic" to 16
DEBUG: checking pdc device "/dev/sda"
DEBUG: checking pdc device "/dev/sdb"
DEBUG: checking pdc device "/dev/sdc"
DEBUG: set status of set "pdc_cdgjdcefic" to 16
RAID set "pdc_cdfjcjhfhe" already active
INFO: Activating stripe raid set "pdc_cdfjcjhfhe"
RAID set "pdc_cdgjdcefic" already active
INFO: Activating stripe raid set "pdc_cdgjdcefic"
NOTICE: discovering partitions on "pdc_cdfjcjhfhe"
NOTICE: /dev/mapper/pdc_cdfjcjhfhe: dos     discovering
NOTICE: /dev/mapper/pdc_cdfjcjhfhe: dos metadata discovered
DEBUG: _find_set: searching pdc_cdfjcjhfhe1
DEBUG: _find_set: not found pdc_cdfjcjhfhe1
DEBUG: _find_set: searching pdc_cdfjcjhfhe2
DEBUG: _find_set: not found pdc_cdfjcjhfhe2
DEBUG: _find_set: searching pdc_cdfjcjhfhe5
DEBUG: _find_set: not found pdc_cdfjcjhfhe5
DEBUG: _find_set: searching pdc_cdfjcjhfhe6
DEBUG: _find_set: not found pdc_cdfjcjhfhe6
DEBUG: _find_set: searching pdc_cdfjcjhfhe7
DEBUG: _find_set: not found pdc_cdfjcjhfhe7
DEBUG: _find_set: searching pdc_cdfjcjhfhe8
DEBUG: _find_set: not found pdc_cdfjcjhfhe8
NOTICE: created partitioned RAID set(s) for /dev/mapper/pdc_cdfjcjhfhe
NOTICE: discovering partitions on "pdc_cdgjdcefic"
NOTICE: /dev/mapper/pdc_cdgjdcefic: dos     discovering
NOTICE: /dev/mapper/pdc_cdgjdcefic: dos metadata discovered
NOTICE: created partitioned RAID set(s) for /dev/mapper/pdc_cdgjdcefic
RAID set "pdc_cdfjcjhfhe1" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe1"
RAID set "pdc_cdfjcjhfhe2" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe2"
RAID set "pdc_cdfjcjhfhe5" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe5"
RAID set "pdc_cdfjcjhfhe6" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe6"
RAID set "pdc_cdfjcjhfhe7" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe7"
RAID set "pdc_cdfjcjhfhe8" already active
INFO: Activating partition raid set "pdc_cdfjcjhfhe8"
WARN: unlocking /var/lock/dmraid/.lock
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe"
DEBUG: freeing device "pdc_cdfjcjhfhe", path "/dev/sda"
DEBUG: freeing device "pdc_cdfjcjhfhe", path "/dev/sdb"
DEBUG: freeing device "pdc_cdfjcjhfhe", path "/dev/sdc"
DEBUG: freeing devices of RAID set "pdc_cdgjdcefic"
DEBUG: freeing device "pdc_cdgjdcefic", path "/dev/sda"
DEBUG: freeing device "pdc_cdgjdcefic", path "/dev/sdb"
DEBUG: freeing device "pdc_cdgjdcefic", path "/dev/sdc"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe1"
DEBUG: freeing device "pdc_cdfjcjhfhe1", path "/dev/mapper/pdc_cdfjcjhfhe"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe2"
DEBUG: freeing device "pdc_cdfjcjhfhe2", path "/dev/mapper/pdc_cdfjcjhfhe"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe5"
DEBUG: freeing device "pdc_cdfjcjhfhe5", path "/dev/mapper/pdc_cdfjcjhfhe"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe6"
DEBUG: freeing device "pdc_cdfjcjhfhe6", path "/dev/mapper/pdc_cdfjcjhfhe"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe7"
DEBUG: freeing device "pdc_cdfjcjhfhe7", path "/dev/mapper/pdc_cdfjcjhfhe"
DEBUG: freeing devices of RAID set "pdc_cdfjcjhfhe8"
DEBUG: freeing device "pdc_cdfjcjhfhe8", path "/dev/mapper/pdc_cdfjcjhfhe"
end:

thank you all.
and sorry that I misread about CentOS install message.