Hardware description
The Ultrastar 18LZX and 36ZX offers the following features:
Ÿ
Capacities of 9GB, 18GB, or 36GB
Ÿ
68 or 80 pin connectors
Ÿ
68 pin SCSI connectors using the SCSI P connector
Ÿ
80 pin SCSI connectors using the SCA-2 connector
Low Voltage Differential (Ultra2)
80 pin SCA-2
DMVS-36D
36.70GB
Low Voltage Differential (Ultra2)
68 pin
DMVS-36V
36.70GB
Low Voltage Differential (Ultra2)
80 pin SCA-2
DMVS-18D
18.35GB
Low Voltage Differential (Ultra2)
68 pin
DMVS-18V
18.35GB
Low Voltage Differential (Ultra2)
80 pin SCA-2
DMVS-09D
9.11GB
Low Voltage Differential (Ultra2)
68 pin
DMVS-09V
9.11GB
SCSI Electrical Signal Type
Connector Type
Model
Capacity
These drives offer an advanced LVD interface that supports transfer rates of up to 80 MB/sec. To take
advantage of the higher transfer rate of 80 MB/sec, your computer will need a controller that supports the
LVD interface. If you have a SCSI controller that does not support this interface, the data transfer
speeds will be lower than 80MB/sec
due to the lower speed of the controller. If you have a slower con-
troller, you may
wish to purchase an LVD controller card to take advantage of the drive’s 80 MB/sec data
transfer rate. To determine if your current controller card is LVD, check the documentation that came
with your controller or contact the controller manufacturer.
If you currently have single-ended wide SCSI drives and a non-LVD controller, the LVD model Ultrastar
18LZX or 36ZX may be attached to the existing cable. If you choose to replace your non-LVD controller
with an LVD model single-ended wide SCSI drives can be attached to the same bus with an LVD drive.
However, there are some LVD controllers that do not support single-ended wide SCSI drives. Check the
documentation that came with your controller or contact the manufacturer to ensure that your LVD
controller will support single-ended wide SCSI drives.
Before you begin installation, please read the “Handling Precautions” on the following page.
IBM storage products
Page 4
IBM Hard Disk Drive Technical Support Center version 2.0
34L3743IG10
