3.0General description

Cheetah 10K.7 SCSI drives combine giant magnetoresistive (GMR) heads, partial response/maximum likeli- hood (PRML) read channel electronics, embedded servo technology, and a wide Ultra320 SCSI interface to provide high performance, high ] data storage for a variety of systems including engineering workstations, net- work servers, mainframes, and supercomputers.

Ultra320 SCSI uses negotiated transfer rates. These transfer rates will occur only if your host adapter supports these data transfer rates and is compatible with the required hardware requirements of the I/O circuit type. This drive also operates at SCSI-1 and SCSI-2 data transfer rates for backward compatibility with non-Ultra/Ultra2/ Ultra320 SCSI host adapters.

Table 1 lists the features that differentiate the Cheetah 10K.7 SCSI models.

Table 1:

Drive model number vs. differentiating features

 

 

 

 

 

 

 

 

Number of active

 

Number of I/O

Model number

heads

I/O circuit type [1]

connector pins

 

 

 

 

ST3300007LW

8

 

 

ST3146707LW

4

Single-ended (SE) and low voltage differential (LVD)

68

ST373207LW

2

 

 

 

 

 

 

ST3300007LC

8

 

 

ST3146707LC

4

Single-ended (SE) and low voltage differential (LVD)

80

ST373207LC

2

 

 

 

 

 

 

 

[1]See Section 9.6 for details and definitions.

The drive records and recovers data on approximately 84 mm non-removable discs.

The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface specifications to the extent described in this manual (volume 1), which defines the product performance char- acteristics of the Cheetah 10K.7 SCSI family of drives, and the SCSI Interface Product Manual (volume 2), part number 75789509, which describes the general interface characteristics of this and other families of Seagate SCSI drives.

The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and log- ical block addressing.

The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a non- replaceable filter to maintain a contamination-free HDA environment.

Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actu- ator, etc.) as this requires special facilities. The drive contains no replaceable parts. Opening the HDA voids your warranty.

Cheetah 10K.7 SCSI Product Manual, Rev. D

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Seagate ST373207LW/LC, ST3146707LW/LC, ST3300007LW/LC manual General description
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ST3300007LW/LC, ST373207LW/LC, ST3146707LW/LC specifications

Seagate's ST3146707LW/LC, ST373207LW/LC, and ST3300007LW/LC are part of the company's renowned line of hard disk drives (HDDs), specifically designed for enterprise and high-performance computing environments. With their reliability and performance, these drives have become popular choices for data centers and critical applications requiring extensive storage capabilities.

One of the standout features of these models is their capacity to handle large volumes of data. The ST3146707LW/LC has a capacity of 146GB, while the ST373207LW/LC offers 73GB, and the ST3300007LW/LC comes with a substantial 300GB. These capacities make them well-suited for applications that require not only high storage space but also rapid access to data.

In terms of performance, these drives utilize a 10,000 RPM spindle speed, which significantly enhances data access times and overall performance. The combination of fast rotational speeds with Seagate's advanced caching algorithms allows for swift data retrieval, making these drives ideal for environments where speed is crucial.

These HDDs also employ the SCSI (Small Computer System Interface) interface, which promises high data transfer rates and reliability in enterprise-level applications. The Ultra320 SCSI interface can support transfer rates up to 320 MB/s, ensuring that the drives can efficiently communicate with other system components.

Another key technology featured in these models is Seagate's Adaptive Error Correction technology, which enhances data integrity and reliability. This feature helps in the detection and correction of errors that can occur during data transfer, reducing the risk of data loss.

Performance consistency is critical in enterprise environments, and these drives are built to endure the demands of 24/7 operation. They are designed with robust mechanisms to withstand temperature fluctuations, shock, and vibrations commonly found in data center settings.

In summary, the Seagate ST3146707LW/LC, ST373207LW/LC, and ST3300007LW/LC hard drives exemplify advanced features and technologies tailored for enterprise storage solutions. With significant capacities, impressive spindle speeds, SCSI connectivity, and reliability-focused technologies, these drives remain a valuable asset for businesses relying on stable and high-performance data storage.
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