Parameter Data Formats

a.TST (Task Set Type)

This field specifies the type of task set defined below.

Value

Description

 

 

000b

Task set per logical unit for all initiators

001b

Task set per initiator per logical unit

010b-111b

Reserved

 

 

The IDD operates according to "000b". If other value is specified in this field, the IDD reports a "CHECK CONDITION" status (ILLEGAL REQUEST [=5] / Invalid parameter in list [=26-00]).

b.GLTSD (Global Logging Target Save Disable) (not supported)

This bit specifies whether or not to permit the saving treatment of peculiar logging parameter within the IDD.

Since the IDD performs the saving treatment with itself algorithm regardless of specified value in this bit, disregards the specification in this bit.

c.RLEC (Report Log Exception Condition) (not supported)

This bit controls operations in cases where the accumulated value log parameter reaches the maximum value.

"1" : The IDD reports a CHECK CONDITION status (UNIT ATTENTION [=6] / Log counter at maximum [5B-02]).

"0" : The IDD executes the command which is issued next normally.

Since the IDD does not support the reporting function of exception condition, the IDD disregards the specification in this bit.

d.Queue algorithm qualifier

This parameter controls the execution order algorithm of a command issued together with a SIMPLE QUEUE TAG message.

When "0" is specified in this parameter, the IDD may change the queued command execution order in order to achieve the best performance.

The commands that may be reordered are: Read, Read Extend, Write, Write Extend.

In case the commands whose specified LBAs are overlapped, the order of the commands in question are kept to ensure the Data Integrity.

When "1" is specified in this parameter, the IDD may change the queued command execution order in order to achieve the best performance.

The commands that may be reordered are: Read, Read Extend, Write, Write Extend.

4 - 28

C141-E167

Page 204
Image 204
Fujitsu MAS3367, MAP3367, MAP3147, MAS3735, MAP3735 specifications Parameter Data Formats

MAP3735, MAP3147, MAS3367, MAP3367, MAS3735 specifications

Fujitsu, a renowned leader in technology and innovation, has developed a variety of reliable hard disk drives (HDDs) that cater to a wide range of data storage needs. Among these, the MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series stand out for their advanced features and exceptional performance.

The MAS3735 is a high-capacity enterprise-class drive that boasts a storage capacity of up to 300 GB. Its 10,000 RPM spindle speed ensures rapid data retrieval and efficient performance, making it ideal for data-intensive applications. It utilizes a Serial Attach SCSI (SAS) interface, which allows for improved data transfer rates and increased reliability compared to traditional SATA drives. The drive is designed with advanced technologies such as error recovery and data integrity features, ensuring the safety and security of critical data.

Similarly, the MAP3367 and MAS3367 models are geared towards both enterprise and mid-range server environments, providing a storage capacity of up to 300 GB as well. These drives also operate at a spindle speed of 15,000 RPM, offering swift access times that enhance overall system performance. The MAP3367 employs the Ultra 320 SCSI interface, allowing for significant bandwidth and ensuring data is transmitted efficiently.

On the other hand, both MAP3147 and MAP3735 models provide versatile solutions for various applications, supporting capacities from 36 GB to 147 GB. The MAP3147, with its 10,000 RPM speed, is optimized for workloads requiring quick access and high throughput, making it suitable for transactional systems and enterprise applications. The MAP3735, while offering comparable capacity, emphasizes exceptional reliability and durability, which is crucial for environments that involve heavy data loads.

All these Fujitsu HDDs are characterized by their robust construction, reliability, and efficiency. They are built to withstand heavy workloads and are equipped with features like advanced thermal management and acoustic noise reduction, ensuring they operate effectively in data center environments.

In conclusion, Fujitsu's MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series HDDs are designed for high performance and reliability, catering to both enterprise and mid-range environments. Their advanced features make them a strong choice for businesses looking to enhance their storage solutions while maintaining data integrity and system performance.