9.1.10Fibre Channel Arbitrated Loop options

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

Table 15:

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.

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

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Seagate ST3146356FC Dual port support, Fibre Channel Arbitrated Loop options, FC-AL options supported, Option Supported
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ST3450856FC, ST3300656FC, ST3146356FC specifications

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The ST3146356FC is notable for its 146GB capacity, 3.5-inch form factor, and 10,000 RPM spindle speed. It employs Serial Attached SCSI (SAS) interface technology, which ensures high data transfer rates and reliable connectivity. This model is designed to handle a multitude of demanding applications, such as online transaction processing and enterprise resource planning, requiring fast access to data and minimized latency.

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The ST3450856FC offers even greater capacity, with a robust 450GB storage option. Like the other models, it operates at 10,000 RPM and utilizes the SAS interface. This drive is designed for scalability, ensuring that it can meet the evolving storage demands of enterprises. It is also equipped with sophisticated technologies such as Seagate's Enhanced S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology), providing continual monitoring of the drive’s health and performance metrics.

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In summary, the Seagate ST3146356FC, ST3300656FC, and ST3450856FC drives are engineered for enterprise environments demanding high reliability, speed, and capacity. Their advanced technologies, including SAS interface and enhanced error management systems, make these drives ideal for critical applications in data-intensive sectors. With reinforced durability, effectiveness in managing large volumes of data, and a focus on energy efficiency, these drives symbolize the pinnacle of Seagate's storage innovations for enterprise solutions.
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