Command Processing

Table 1.2 Types of Command and Disconnect Processing

Commands with executing disconnect processing. (Note 2)

Commands without executing disconnect processing. (Note 1)

C

CHANGE DEFINITION

(40)

 

O

F

FORMAT UNIT

(04)

 

O

I

INQUIRY

(12)

O

 

L

LOG SELECT

(4C)

 

O

 

LOG SENSE

(4D)

 

O

M

MODE SELECT

(15)

 

O

 

MODE SELECT EXTENDED

(55)

 

O

 

MODE SENSE

(1A)

 

O

 

MODE SENSE EXTENDED

(5A)

 

O

N

 

 

 

 

P

PERSISTENT RESERVE IN

(5E)

 

O

 

PERSISTENT RESERVE OUT

(5F)

 

O

R

READ

(08)

 

O

 

READ BUFFER

(3C)

 

O

 

READ CAPACITY

(25)

 

O

 

READ DEFECT DATA

(37)

 

O

 

READ EXTENDED

(28)

 

O

 

READ LONG

(3E)

 

O

 

REASSIGN BLOCKS

(07)

 

O

 

RECEIVE DIAGNOSTIC RESULTS

(1C)

 

O

 

RELEASE

(17)

 

O

 

REPORT DEVICE IDENTIFIER

(A3)

 

O

 

REPORT LUN

(A0)

O

 

 

REQUEST SENSE

(03)

O

 

 

RESERVE

(16)

 

 

 

REZERO UNIT

(01)

 

O

S

SEEK

(0B)

 

O

 

SEEK EXTENDED

(2B)

 

O

 

SEND DIAGNOSTIC

(1D)

 

O

 

SET DEVICE IDENTIFIER

(A4)

 

O

 

START/STOP UNIT

(1B)

 

O

 

SYNCHRONIZE CACHE

(35)

 

O

T

TEST UNIT READY

(00)

O

 

V

VERIFY

(2F)

 

O

W

WRITE

(0A)

 

O

 

WRITE AND VERIFY

(2E)

 

O

 

WRITE BUFFER

(3B)

 

O

 

WRITE EXTENDED

(2A)

 

O

 

WRITE LONG

(3F)

 

O

 

WRITE SAME

(41)

 

O

(Note 1)

Commands without executing disconnect processing: In cases only where commands are issued

 

without a tag, queuing processing (see Section 1.4) and disconnect processing cannot be

 

performed in the execution sequence.

(Note 2)

Commands with executing disconnect processing: Regardless of command queuing, in a command’s

 

execution process (after the COMMAND phase is completed, or during or after the completion of data

 

transfer), disconnect processing is performed. However, in the case of commands with a data state (in

 

cases where it is hit in the cache, etc.), or with a number of processing modes, other than cases where

 

the command is in a queue, disconnect processing may not be executed depending on the processing

 

content specification of the command.

1 - 12

C141-E167

Page 29 Page 31
Page 30
Image 30
Fujitsu MAP3367, MAP3147, MAS3735, MAP3735 Types of Command and Disconnect Processing, Performed in the execution sequence
Page 29 Page 31

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.
Top Page Image Contents