Command Specifications

3.1.19PERSISTENT RESERVE OUT (5E)

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The PERSISTENT RESERVE OUT command reserves a logical unit for exclusive or shared use by a particular initiator. This command is used in combination with the PERSISTENT RESERVE IN command. However, this command is not associated with the RESERVE or RELEASE command.

The persistent reservation conflicts with the reservation requirements specified by the RESERVE command (RESERVATION CONFLICT). The initiator defines the reservation key. The reservation key identifies the initiator that executes a service action of the PERSISTENT RESERVE OUT command. The initiator can verify which initiators have caused conflicts with the reservation requirements and which initiators hold invalid reservation requirements. If necessary, the initiator can also preempt reservation rights by issuing the PERSISTENT RESERVE OUT command.

The set reservation requirements are not reset by processing such as the TARGET RESET task. Therefore, a persistent reservation can be used for sharing a device among multiple initiators. The PERSISTENT RESERVATION OUT and PERSISTENT RESERVATION IN commands provides basic features for analyzing the dynamically changeable reservation status on a multi-initiator system using multi-port targets. These commands can identify whether a particular reservation requirement is held. They can also eliminate the requirements from an initiator that has an error or is not cooperative.

When a drive receives this command and a reservation requirement has been held by the RESERVE/RESERVE EXTEND command, the command is rejected and returned with the RESERVATION CONFLICT status.

When this command is issued, if an invalid drive resource exists, the drive returns the "CHECK CONDITION" status. The sense key is set to ILLEGAL REQUEST [=5]. Sense data is set to INSUFFICIENT REGISTRATION RESOURCES [=55-04].

(However, SCSI devices do not report sense information.)

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Fujitsu MAP3735, MAP3367, MAP3147, MAS3735, MAS3367 specifications Persistent Reserve OUT 5E, Msb
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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.
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