9.4Miscellaneous operating features and conditions

Table 13 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feature or condition is not supported.

Table 13:

Miscellaneous features

 

 

 

Supported

 

Feature or condition

 

 

 

N

 

Automatic contingent allegiance

 

 

 

N

 

Asynchronous event notification

 

 

 

N

 

Synchronized (locked) spindle operation

 

 

 

Y

 

Segmented caching

 

 

 

N

 

Zero latency read

 

 

 

Y

 

Queue tagging (up to 64 queue tags supported)

 

 

 

Y

 

Deferred error handling

 

 

 

Y

 

Parameter rounding (controlled by Round bit in Mode Select page 0)

 

 

 

Y

 

Reporting actual retry count in Extended Sense bytes 15, 16, and 17

 

 

 

N

 

Adaptive caching

 

 

 

Y

 

SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes

 

 

 

Table 14:

Miscellaneous status

 

 

 

Supported

 

Status

 

 

 

Y

 

Good

 

 

 

Y

 

Check condition

 

 

 

Y

 

Condition met/good

 

 

 

Y

 

Busy

 

 

 

Y

 

Intermediate/good

 

 

 

Y

 

Intermediate/condition met/good

 

 

 

Y

 

Reservation conflict

 

 

 

Y

 

Task set full

 

 

 

N

 

ACA active

 

 

 

N

 

ACA active, faulted initiator

 

 

 

56

Cheetah T10 SAS Product Manual, Rev. A

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Seagate ST373355SS manual Miscellaneous operating features and conditions, Miscellaneous features, Miscellaneous status

ST3300555SS, ST3146755SS, ST373355SS specifications

The Seagate ST373355SS, ST3146755SS, and ST3300555SS represent a range of high-performance hard drives designed for enterprise applications, particularly in server environments requiring reliability, speed, and high capacity.

The ST373355SS is a 73.5 GB SCSI hard drive operating at 15,000 RPM, which ensures rapid data access and superior performance, making it ideal for transactional applications and data-intensive tasks. With its 4 MB cache, the drive leverages fast read and write speeds, enhancing overall system responsiveness. The SCSI interface, operating at 80 MB/s, allows for high-speed data transfers, making it a suitable choice for demanding environments where quick access to information is critical. Its hot-swappable feature enables maintenance without shutting down the system, maximizing uptime and productivity.

The ST3146755SS, with a capacity of 146.8 GB, builds on the performance of its predecessor while introducing improvements in data handling and reliability. Operating at the same impressive 15,000 RPM, this model also features a 16 MB cache that greatly improves data throughput and access speed. The drive is designed to reduce latency, which is crucial for applications where timing is everything. It is equipped with advanced error recovery features and Seagate’s innovative PowerTrim technology, which improves power efficiency during read and write operations. The ST3146755SS also features a higher mean time between failures (MTBF), underscoring its reliability in high-demand environments.

Lastly, the ST3300555SS offers even greater capacity with 300 GB. This drive maintains the 15,000 RPM rotation speed and benefits from a 16 MB cache, providing a balance of speed and storage capacity. Its advanced SCSI interface supports not just speed but also data integrity, ensuring consistent performance during extensive data transfers. The drive is designed to handle workloads naturally associated with enterprise servers, data warehouses, and video editing applications. Its rugged build supports continuous operation and is tested for high-temperature environments to ensure durability.

In summary, the Seagate ST373355SS, ST3146755SS, and ST3300555SS hard drives are engineered for enterprise environments, combining impressive RPM speeds, significant storage capacities, and advanced technologies to deliver reliability, performance, and efficiency for critical applications. These hard drives represent Seagate's commitment to providing solutions that meet the rigorous demands of modern data environments.