Dell PERC 4/DC User Manual download pdf (Page 21)

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Table 4-5.ConfigurationforSCSIChannel1



Setting Hardware Termination



The SCSI bus is an electrical transmission line and must be terminated properly to minimize reflections and losses. Termination should be set at each end of

the SCSI cable(s). For PERC 4e/DC, the following headers specify control of the SCSI termination:

l J5 Termination Enable is a three-pin header that specifies control of the SCSI termination for channel 0.

l J6 Termination Enable is a three-pin header that specifies control of the SCSI termination for channel 1.



To enable hardware termination, leave the pins open. The default is hardware termination.



Configuring Arrays

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After you configure and initialize the hard drives, you are ready to configure arrays. The number of drives in an array determines the RAID levels that can be

supported.



For information about the number of drives required for different RAID levels, see Table4-7 in Assigning RAID Levels.

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Spanned Drives

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You can arrange arrays sequentially with an identical number of drives so that the drives in the different arrays are spanned. Spanned drives can be treated

as one large drive. Data can be striped across multiple arrays as one logical drive.

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You can create spanned drives using your array management software.

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SCSI Channel 1

SCSI ID

Device Description

0



1



2



3



4



5



6



7

Reserved for host controller.

8



9



10



11



12



13



14



15



NOTE: If you are using the PERC 4/DC RAID controller for clustering, then you must use hardware termination. Otherwise, software termination is OK.

NOTE: See Step 7 Set SCSI Termination for additional information about setting SCSI termination.

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