Seagate ST9250412AS Momentus 7200 FDE.1 SATA Product Manual - Page 14

Physical organization, Recording and interface technology, Physical characteristics

Page 14 highlights

2.4 Physical organization Drive model ST9320424AS and ST9320424ASG ST9250424AS and ST9250424ASG ST9160414AS and ST9160414ASG ST9120414AS and ST9120414ASG ST980414ASG Read/write heads 4 3 2 2 1 2.5 Recording and interface technology Interface Recording method Recording density BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) Maximum Internal transfer rate (Gbits/sec) I/O data-transfer rate (Gbits/sec max) Interleave Cache buffer 2.6 Physical characteristics Drive specification Height (mm) (inches) Width (mm) (inches) Length (mm) (inches) Typical weight ST9320424AS ST9320424ASG ST9250424AS ST9250424ASG ST9160414AS ST9160414ASG ST9120414AS ST9120414ASG ST980414ASG 9.5 +/-0.2 0.374 +/-0.0078 69.85 +/-0.249 2.75 +/-0.0098 100.3 +/-0.25 3.95 +/-0.010 110 grams 0.238 pounds 105 grams 0.227 pounds Number of discs 2 2 1 1 1 Serial ATA (SATA) Perpendicular 1,334k 190k 253 7,200 1.1 3.0 1:1 16 Mbytes (16,384 kbytes) 8 Momentus 7200 FDE.1 SATA Product Manual, Rev. B

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8
Momentus 7200 FDE.1 SATA Product Manual, Rev. B
2.4
Physical organization
2.5
Recording and interface technology
2.6
Physical characteristics
Drive model
Read/write heads
Number of discs
ST9320424AS and ST9320424ASG
4
2
ST9250424AS and ST9250424ASG
3
2
ST9160414AS and ST9160414ASG
2
1
ST9120414AS and ST9120414ASG
2
1
ST980414ASG
1
1
Interface
Serial ATA (SATA)
Recording method
Perpendicular
Recording density BPI (bits/inch max)
1,334k
Track density TPI (tracks/inch max)
190k
Areal density (Gbits/inch
2
max)
253
Spindle speed (RPM) (
±
0.2%)
7,200
Maximum Internal transfer rate (Gbits/sec)
1.1
I/O data-transfer rate (Gbits/sec max)
3.0
Interleave
1:1
Cache buffer
16 Mbytes (16,384 kbytes)
Drive specification
Height
(mm)
(inches)
9.5 +/-0.2
0.374
+/-0.0078
Width
(mm)
(inches)
69.85 +/-0.249
2.75
+/-0.0098
Length
(mm)
(inches)
100.3 +/-0.25
3.95 +/-0.010
Typical weight
ST9320424AS
ST9320424ASG
ST9250424AS
ST9250424ASG
ST9160414AS
ST9160414ASG
ST9120414AS
ST9120414ASG
ST980414ASG
110 grams
0.238 pounds
105 grams
0.227 pounds