difference betrween Seagate WD, WC and LC models

[paul courry]

Guys,

I need a quick explanation of the difference between the Seagate WD, WC and LC models. I know the WD's are high voltage differential drives. What are the WC's and LC's?

[Bill McNAMARA_1 · Accepted solution]

S T 3 18275 LW
Seagate Form Factor Capacity Interface
Technology

Form Factor
1 = 3.5-inch, half-height, 1.6-inch high
3 = 3.5-inch, low-profile (LP), 1-inch high

Capacity
Formatted capacity in Mbytes

Interface
DC = Differential, 80-pin Single Connector Attachment
(SCA)
FC = Fibre Channel, 40-pin SCA
FCV = Same as FC, but with an increased cache size
(Recommended for Video applications and applications
with large file formats)
LC = Low Voltage Differential, 80-pin SCA
LCV = Same as LC, but with an increased cache size
(Recommended for Video applications and applications
with large file formats)
LW = Low Voltage Differential, 68-pin Wide SCSI Connector
LWV = Same as LW, but with an increased cache size
(Recommended for Video applications and applications
with large file formats)
N = SCSI, 50-pin Narrow SCSI Connector
ND = Differential, 50-pin Narrow SCSI Connector
W = SCSI, 68-pin Wide SCSI Connector
WC = SCSI, 80-pin SCA (Hot Swappable)
WD = Differential, 68-pin Wide SCSI Connector

[Paula J Frazer-Campbell]

Hi

The "LC" is 80 pin and the "LW" has a 68 pin interface.
Following is how to interpret the Seagate Model number:
Seagate ATA Disc Drives

S T 3 17241 A
Seagate Technology
Form
Factor
Capacity
Interface




Form Factor
3 = 3.5-inch, Low-Profile (LP), 1-inch high
Capacity
Formatted capacity in Mbytes
Interface
A = ATA, Ultra ATA, Ultra ATA/66 (IDE/EIDE)

Seagate SCSI Disc Drives

S T 3 18275 LW
Seagate Technology
Form Factor
Capacity
Interface




Form Factor
1 = 3.5-inch, half-height, 1.6-inch high
3 = 3.5-inch, low-profile (LP), 1-inch high
Capacity
Formatted capacity in Mbytes
Interface
DC = Differential, 80-pin Single Connector Attachment (SCA)
FC = Fibre Channel, 40-pin SCA
FCV = Same as FC, but with an increased cache size (Recommended for Video
applications and applications with large file formats)
LC = Low Voltage Differential, 80-pin SCA
LCV = Same as LC, but with an increased cache size (Recommended for Video
applications and applications with large file formats)
LW = Low Voltage Differential, 68-pin Wide SCSI Connector
LWV = Same as LW, but with an increased cache size (Recommended for Video
applications and applications with large file formats)
N?? = SCSI, 50-pin Narrow SCSI Connector
ND = Differential, 50-pin Narrow SCSI Connector
W?? = SCSI, 68-pin Wide SCSI Connector
WC = SCSI, 80-pin SCA (Hot Swappable)
WD = Differential, 68-pin Wide SCSI Connector

Seagate Disc Drives


Form Factor
1 = 3.5-inch, half-height, 1.6-inch high
2 = 5.25-inch, half-height, 1.6-inch high
3 = 3.5-inch, low-profile (LP), 1-inch high
4 = 5.25-inch, full height
5 = 3.5-inch, 0.75-inch high
6 = 9-inch
7 = 1.8-inch
8 = 8-inch
9 = 2.5-inch, 0.75-inch high
Capacity
Formatted capacity of the drive in Mbytes (Some models made before 1994
show Unformatted capacity)
Interface
A = ATA, Ultra ATA (IDE/EIDE)
AG = ATA w/SafeWrite Shock Protection
DC = Differential, 80-pin Single Connector Attachment (SCA)
E = ESDI Interface
FC = Fibre Channel, 40-pin SCA
J = SMD/SME-E Interface
K = IPI-2 Interface or Part of a Kit
LC = Low Voltage Differential, 80-pin SCA
LW = Low Voltage Differential, 68-pin Wide SCSI Connector
N?? = SCSI, 50-pin Narrow SCSI Connector
ND = Differential, 50-pin Narrow SCSI Connector
NM = SCSI, 50-pin Narrow SCSI Connector, Macintosh Compatible
NV = SCSI, 50-pin Narrow SCSI Connector, Netware Ready
P = PCMCIA (PC Card) Interface
R = ST412/RLL Interface
S = Synchronized Spindle or Synchronous SCSI
W?? = SCSI, 68-pin Wide SCSI Connector
WC = SCSI, 80-pin SCA (Hot Swappable)
WD = Differential, 68-pin Wide SCSI Connector
X = XT Bus (IDE)
Unspecified = ST412/MFM Interface
Option
PR = Drive shipped?? with installation software and a Seagate controller
or host adapter.
Access Time
0 = Standard
1 = Faster



Paula