Datasheet

Hitachi Global Storage Technologies
Page 5 version 1.0
definitions upon the deassertion of
DMACK– at the termination of the DMA
burst. See the table below.
Ultra DMA definitions
Special defini-
tion (for Ultra
DMA)
Conventional
definition
Write
DDMARDY–
HSTROBE
STOP
IORDY
DIOR
–
DIOW
–
Read
HDMARDY –
DSTROBE
STOP
DIOR–
IORDY
DIOW
–
Mechanical data
Height 25.4 mm ± 0.4
Width 101.6 mm ± 0.4
Length 146.0 mm ± 0.6
Weight (maximum) 640 grams
Mounting
The drive will operate in all axes (six
directions). Performance and error
rate will stay within specification
limits if the drive is operated in the
other permissible orientations from
which it was formatted.
For reliable operation the drive must
be mounted in the system securely
enough to prevent damage from
excessive motion or vibration during
seek operation or spindle rotation,
using appropriate screws or equiva-
lent mounting hardware.
Drive level vibration test and shock
test are to be conducted with the
drive mounted to the table using the
bottom four screws.
Mounting holes
Dimension
reference
number
(1) (2) (3) (4) (5) (6) (7)
Dimension
(mm)
41.28 ± 0.5 44.45 ± 0.2 95.25 ± 0.2 6.35 ± 0.2 28.5 ± 0.5 60.0 ± 0.2 41.6 ± 0.2
Mounting screw thread count = 6-32 UNC
Notes: Recommended screw torque to be applied to mounting screws is 0.6–1.0 Nm (6–10 kg-cm).