Raid 0?
RAID (. redundant array of independent disks ) , , . . / / (RAID 0).
RAID 0 , .
RAID 0 (striping ) (.., RAID - ). (
) / .
(+): ( ).
(-): RAID 0 RAID 0 , . . .
20. Raid 1
(Mirroring) , , . '' ''. , , , A B. , , C+D A+B. , . , , .
, "". , "", .
, , : ( ), ( ).
RAID 1 , , , . RAID 1 , , .. .
1 () 2 ( 1) 3 () 4 ( 3) 5 ()
1 1 2 2
3 3 4 4
. 2. RAID 1.
(+): .
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(+): , . . . RAID ( ) . .
(-): , , .
21 I2C I²C , Philips 1980- . , .
I²C , .
: * NVRAM; * /;
* , ; * ; * , ;
* , , ;
* ( );
* / ; * ;
22 WE#
WE# (Write Enable) - . CAS# WE# (Early Write - , ), WE# CAS# (Delayed Write - ). WE# CAS# , EDO DRAM .
23. SR.7 (Busy) Centronics.
Status register (SR) . SR.7 Busy Busy (11): .
24. SR.3 Centronics.
Status register (SR) . SR.3 Error Error (15). .
25. CR.5 Centronics.
CR , . CR.5 Direction ( PS/2). . .
26. CR.2 Centronics.
CR , . CR.2 Init lnit (16) .
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27)VDSL :
- ;
- , , . (.. : ).
VDSL . - . (). 300 VDSL , ADSL. VDSL ( ) " " ADSL.
28) RAID-5 . . . . . .
:
1)
2)
:
29) RAID - .
1) ( , )
2) ( :
- ()
- )
