Adaptec 2110S - SCSI RAID Controller Przewodnik Instalacji Pobierz pdf (Strona 26)

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Installing Your Controller

LVD and SE Devices

Attaching a single-ended (SE) SCSI device to an LVD bus causes the

bus to slow down to Ultra SCSI speed (20 MHz) for all devices.

Note: Adaptec RAID controllers cannot be used with older

SCSI 5-V differential (DE) devices.

SCSI Cables

Adaptec recommends you using Ultra160 SCSI devices and good

quality LVD SCSI cables, which can be purchased from Adaptec, at

www.adaptec.com, or other suppliers.

SCSI Device IDs

The SCSI specification allows up to 7 SCSI devices (and a controller)

to be connected to a single 8-bit SCSI bus. A Wide SCSI bus can

support up to 15 devices and the controller.

All SCSI devices, including the controller, must be assigned a unique

SCSI ID. SCSI IDs, which are typically set using jumpers or switches

on peripheral devices, can be assigned any number from 0 to 7 for

8-bit SCSI devices or 0 to 15 for Wide SCSI devices.

Set the SCSI ID of each SCSI device attached to the controller to a

unique ID number between 0 and 6. The Adaptec RAID controller is

set to ID 7 by default (most SCSI controllers use ID 7). Wide SCSI

devices can also use SCSI IDs 8 through 15. SCSI IDs can only be

duplicated on the same controller if the devices using the same ID

are not attached to the same bus.

If necessary, the Adaptec RAID controller ID can be changed to any

ID from 0 through 7. You can use SMOR or the Configure Host Bus

Adapter window in Storage Manager to change the controller SCSI ID.

Note: Changing the controller ID is not recommended. You

should leave the Adaptec RAID controller set at SCSI ID 7.

COMBINED RAID IG.BOOK Page 3 Tuesday, September 25, 2001 5:46 PM

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Adaptec 2110S - SCSI RAID Controller Przewodnik Instalacji Strona 26