9.1.10Fibre Channel Arbitrated Loop options

Table 18 lists the FC-AL options supported by Cheetah 15K.6 FC drives.

Table 18:

FC-AL options supported

 

 

 

Option

 

Supported

 

 

OPEN Half Duplex

Accepted from another device.

 

 

OPEN Full Duplex

Sent to open another device. Accepted from another device.

 

 

Private Loop

Yes

 

 

 

Public Loop

 

Yes

 

 

Old Port State

No

 

 

Loop Position

Yes

 

 

Loop Position Report

Yes

 

 

 

9.2Dual port support

Cheetah 15K.6 FC drives have two independent FC-AL ports. These ports may be connected on independent loops or on the same loop. Port A and Port B may be connected in any order or combination.

If both ports are connected on independent loops and hard addressing is used, the drive interface address is selected through the interface connector, both ports will seek the same loop address. If no conflict, both ports will have the same loop address.

If both ports are connected in the same loop and hard addressing is used, at least one port will attempt tak- ing a soft address to prevent an address conflict.

Note. When a Cheetah 15K.6 FC drive is connected in loops with previous Seagate FC drive products:

Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)

Barracuda 9FC (ST19171FC)

Cheetah 4LP FC (ST34501FC)

Cheetah 9FC (ST19101FC)

the connection of Port A and B for these products must follow the requirements in their product manu- als.

Subject to buffer availability, the Cheetah 15K.6 FC drives support:

Concurrent port transfers—The drive supports receiving transfers on both ports at the same time when the ports are on independent loops.

Full duplex—The drive supports sending FCP_Data, FCP_RSP, FCP_XFR_RDY and ELS transfers while receiving frames on both ports.

9.3SCSI commands supported

Table 19 lists the SCSI commands supported by Cheetah 15K.6 FC drives.

Cheetah 15K.6 FC Product Manual, Rev. C

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Seagate ST3146756FC (FDE) manual Dual port support, Scsi commands supported, Fibre Channel Arbitrated Loop options

ST3450056FC (FDE), ST3146756FC (FDE), ST3300056FC (FDE) specifications

Seagate has established itself as a leader in data storage solutions, and among its high-performance offerings are the Seagate ST3300056FC (FDE), ST3146756FC (FDE), and ST3450056FC (FDE) drives. These drives are part of Seagate's enterprise-class, 3.5-inch form factor family, providing robust data security, reliability, and performance for demanding data center environments.

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