Quantum® IDE Hard Drive Specifications

    Specifications are subject to change without notice or obligation.

Physical characteristics

Model number
Disks
Physical heads
Logical heads
Cylinders
Capacity
CR12AT
3
6
16
25704
12.7 GB
CR4.3AT
1
2
9
14848
4.3 GB
CR6.4AT
2
3
15
13328
6.4 GB
CR8.4AT
2
4
16
16383
8.4 GB
CX13.6AT
2
4
16
16383
13.6 GB
CX20.4AT
3
6
16
16383
20.4 GB
CX6.8AT
1
2
15
13328
6.8 GB
EL10AT
4
8
16
16383
10.2 GB
EL2.5AT
1
2
16
4092
2.5 GB
EL5.2AT
2
4
9
14848
5.1 GB
EX10AT
3
6
16
19885
10.2 GB
EX13AT
4
8
16
26353
13.5 GB
EX3.2AT
1
2
16
6256
3.2 GB
EX6.4AT
2
4
15
13328
6.4 GB
KX13.6AT
2
4
16
16383
13.6 GB
KX20.4AT
3
6
16
16383
20.4 GB
KX27.4AT
4
8
16
16383
27.4 GB
KX6.8AT
1
2
16
13383
6.8 GB
LA4.3AT
1
1
15
8912
4.31 GB
LB05.1AT
1
1
15
10585
5.121 GB
LB10.2AT
1
2
16
19885
10.2 GB
LB20.4AT
2
4
16
39560
20.4 GB
LC7.5AT
1
1
16
14552
7.50 GB
LC15.0AT
1
2
16
16383
15.0 GB
LM20.5AT
2
4
16
21223
20.5 GB
LM30.0AT
3
6
16
21223
30.0 GB
LD10.0AT
1
1
16
16383
10.0 GB
LD20.0AT
1
2
16
16383
20.0 GB
AS20.5AT
1
2
16
16383
20.5 GB
AS40.0AT
2
4
16
16383
40.0 GB
AS60.0AT
3
6
16
16383
60.0 GB

Address translation

Model number Logical sectors/track Bytes per sector
All models
63
512

Seek performance

Model number Seek read Track-to-track seek Full-stroke seek

CR12AT

9.5/12.0 ms (typical/max.)

1.5 ms (typical)

18.0/22.0 ms (typical/max.)

CR4.3AT

9.5/12.0 ms (typical/max.)

1.5 ms (typical)

18.0/22.0 ms (typical/max.)

CR6.4AT

9.5/12.0 ms (typical/max.)

1.5 ms (typical)

18.0/22.0 ms (typical/max.)

CR8.4AT

9.5/12.0 ms (typical/max.)

1.5 ms (typical)

18.0/22.0 ms (typical/max.)

CX13.6AT

9.5/11.5 ms (typical/max.)

3.0 ms (typical)

18.0/22.0 ms (typical/max.)

CX20.4AT

9.5/11.5 ms (typical/max.)

3.0 ms (typical)

18.0/22.0 ms (typical/max.)

CX6.8AT

9.5/11.5 ms (typical/max.)

3.0 ms (typical)

18.0/20.0 ms (typical/max.)

EL10AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

20.0 ms (typical/max.)

EL2.5AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

20.0/24.0 ms (typical/max.)

EL5.2AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

20.0 ms (typical/max.)

EX10AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/22.0 ms (typical/max.)

EX13AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/22.0 ms (typical/max.)

EX3.2AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/22.0 ms (typical/max.)

EX6.4AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/22.0 ms (typical/max.)

KX13.6AT

8.5 ms (typical)

0.8 ms (typical)

15.0 ms (typical)

KX20.4AT

8.5 ms (typical)

0.8 ms (typical)

15.0 ms (typical)

KX27.4AT

8.5 ms (typical)

0.8 ms (typical)

15.0 ms (typical)

KX6.8AT

8.5 ms (typical)

0.8 ms (typical)

15.0 ms (typical)

LA4.3AT

8.9 ms (typical)

2.0 ms (typical)

20.0 ms (typical)

LB05.1AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/24.0 ms (typical/max.)

LB10.2AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/24.0 ms (typical/max.)

LB20.4AT

9.5/12.0 ms (typical/max.)

2.0 ms (nominal)

18.0/24.0 ms (typical/max.)

LC7.5AT

12.0 ms (typical)

12.0 ms (typical)

24.0 ms (typical)

LC15.0AT

12.0 ms (typical)

12.0 ms (typical)

24.0 ms (typical)

LM20.5AT

8.5/11.5 ms (typical/max.)

3.0/4.0 ms (typical/max.)

15.0/22.0 ms (typical/max.)

LM30.0AT

8.5/11.5 ms (typical/max.)

3.0/4.0 ms (typical/max.)

15.0/22.0 ms (typical/max.)

LD10.0AT

12.0/15.0 ms (typical/max.)

2.0 ms (typical)

24.0/28.0 ms (typical/max.)

LD20.0AT

12.0/15.0 ms (typical/max.)

2.0 ms (typical)

24.0/28.0 ms (typical/max.)

AS20.5AT

8.5 ms (typical)

0.8 ms (typical)

17 ms (typical)

AS40.0AT

8.5 ms (typical)

0.8 ms (typical)

17 ms (typical)

AS60.0AT

8.5 ms (typical)

0.8 ms (typical)

17 ms (typical)

Rotational performance

Model number
Latency
Rotational speed (nominal)
CR12AT
5.56 ms (nominal)
5400 rpm
CR4.3AT
5.56 ms (nominal)
5400 rpm
CR6.4AT
5.56 ms (nominal)
5400 rpm
CR8.4AT
5.56 ms (nominal)
5400 rpm
CX13.6AT
5.56 ms (nominal)
5400 rpm
CX20.4AT
5.56 ms (nominal)
5400 rpm
CX6.8AT
5.56 ms (nominal)
5400 rpm
EL10AT
5.56 ms (nominal)
5400 rpm
EL2.5AT
5.56 ms (nominal)
5400 rpm
EL5.2AT
5.56 ms (nominal)
5400 rpm
EX10AT
5.56 ms (nominal)
5400 rpm
EX13AT
5.56 ms (nominal)
5400 rpm
EX3.2AT
5.56 ms (nominal)
5400 rpm
EX6.4AT
5.56 ms (nominal)
5400 rpm
KX13.6AT
4.17 ms (nominal)
7200 rpm
KX20.4AT
4.17 ms (nominal)
7200 rpm
KX27.4AT
4.17 ms (nominal)
7200 rpm
KX6.8AT
4.17 ms (nominal)
7200 rpm
LA4.3AT
5.56 ms (nominal)
5400 rpm
LB05.1AT
5.56 ms (nominal)
5400 rpm
LB10.2AT
5.56 ms (nominal)
5400 rpm
LB20.4AT
5.56 ms (nominal)
5400 rpm
LC7.5AT
6.82 ms (nominal)
4400 rpm
LC15.0AT
6.82 ms (nominal)
4400 rpm
LM20.5AT
4.17 ms (nominal)
7200 rpm
LM30.0AT
4.17 ms (nominal)
7200 rpm
LD10.0AT
6.7  ms (nominal)
4500 rpm
LD20.0AT
6.7 ms (nominal)
4500 rpm
AS20.5AT
4.17 ,s (nominal)
7200 rpm
AS40.0AT
4.17 ,s (nominal)
7200 rpm
AS60.0AT
4.17 ,s (nominal)
7200 rpm

Error rate

Model number Error correction Unrecoverable error rate

CR12AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CR4.3AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CR6.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CR8.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CX13.6AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CX20.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

CX6.8AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

EL10AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EL2.5AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EL5.2AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EX10AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EX13AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EX3.2AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

EX6.4AT

224-bit Reed-Solomon error correction

<1 in 1014 bits read

KX13.6AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

KX20.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

KX27.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

KX6.8AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LA4.3AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LB05.1AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LB10.2AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LB20.4AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LC7.5AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LC15.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LM20.5AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LM30.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LD10.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

LD20.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

AS20.5AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

AS40.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

AS60.0AT

288-bit Reed-Solomon error correction

<1 in 1014 bits read

Buffer

Model number Maximum buffer-to-host DTR Buffer size

CR12AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CR4.3AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CR6.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CR8.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CX13.6AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CX20.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

CX6.8AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

EL10AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

128K SDRAM

EL2.5AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

128K SDRAM

EL5.2AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

128K SDRAM

EX10AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

EX13AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

EX3.2AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

EX6.4AT

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

KX13.6AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

KX20.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

KX27.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

KX6.8AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LA4.3AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LB05.1AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LB10.2AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LB20.4AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LC7.5AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LC15.0AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

512K SDRAM

LM20.5AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

2048K SDRAM

LM30.0AT

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

2048K SDRAM

LD10.0AT

100 MB/sec max.
(Ultra 66 Mode 4)

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

128K integrated

LD20.0AT

100 MB/sec max.
(Ultra 66 Mode 4)

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

128K integrated

AS20.5AT

100 MB/sec max.
(Ultra 66 Mode 4)

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

2 MB SDRAM

AS40.0AT

100 MB/sec max.
(Ultra 66 Mode 4)

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

2 MB SDRAM

AS60.0AT

100 MB/sec max.
(Ultra 66 Mode 4)

66.6 MB/sec max.
(Ultra 66 Mode 4)

33.3 MB/sec max.
(Ultra ATA Mode)

16.7 MB/sec max.
(PIO Mode with IORDY)

2 MB SDRAM

Dimensions

Model number Dimensions
All models 4.0 × 5.75 × 1.0 inches (W × D × H)
102 × 146 × 25 mm (W × D × H)

    Many products for Gateway and its subsidiaries are custom engineered by our suppliers to Gateway specifications and may vary from similarly marketed products.