Seagate ST12450W, Product Manual

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70 ST12450W/WD Product Manual, Rev. A
flaw reallocation performance impact 14
flawed sector reallocation 7
format drive command execution time
for
≥
512-byte sectors 13
formatting 9
front panel kit (with green lens) 8
G
grounding 43
GYHX, measuring 24
H
head and disc assembly (HDA) 5
cooling 22
head switch, overhead time 14
heat/power dissipation 30
hot plugging Barracuda disc drives 26
humidity 30
I
index signal 18
inquiry data 48
installation 26
instructions 9
plug and play 26
service tools 26
interface requirements 45
interleave 7
minimum sector 14
internal data rate 11
J
J4 (J04), jumper connector 41
J5, jumper connector 41
jumper connectors
explained 41
illustrated 40
L
landing zone 6
M
mean time between failures (MTBF) 22
mechanical specifications
depth 33
height 33
weight 33
width 33
media characteristics 35
media description 35
miscellaneous
operating features supported 51
miscorrected data transferred 21
Mode Select command 15
Mode Sense data 48
Motor Start command 15
MTBF 21
multiple initiators 5
N
96-bit Reed-Solomon error correction code 7
noise
defined 28
maximum allowed 28
O
offset values 19
one track cylinder switch, overhead time 14
operating current 27
option/configuration headers 39
options
drive termination 65
front panel 65
single-unit shipping pack 65
P
panel, front kit 8
Parity Disable option 41
performance
general 7, 14
list of characteristics 11
physical rotational offsets 19
physical/electrical specifications 27
power control switch 15
power dissipation 6
power requirements
AC 27
DC 27
prefetch/multi-segmented cache control 15
preventive maintenance 7, 21, 26
R
radiated emissions, characterizations 3
reallocation of defects on command
(post format) 7
recoverable error rate 21