Power-management modes, Active mode | Seagate ST91603110CS instruction

2.9.4Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:

Table 4:	Power management modes

Power modes		Heads	Spindle	Buffer

Active (operating)		Tracking	Rotating	Full power

Idle, performance		Tracking	Rotating	Self refresh—low power

Idle, active		Floating	Rotating	Self refresh—low power

Idle, low power		Parked	Rotating	Self refresh—low power

Standby		Parked	Stopped	Self refresh—low power

Sleep		Parked	Stopped	Self refresh—low power

•Active mode

The drive is in Active mode during the read/write and seek operations.

•Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.

•Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

•Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

10	Pipeline HD Mini Series SATA Product Manual, Rev. A

ST91603110CS, ST9250311CS specifications

The Seagate ST9250311CS and ST9160311CS are notable hard drives in the field of data storage, specifically designed for reliability and performance in a range of applications, including consumer electronics and personal computing.

The ST9250311CS is a 250GB Serial ATA hard drive, while the ST9160311CS offers a larger capacity of 160GB, both providing a balance of speed and efficiency for users seeking dependable storage solutions. These drives are built to meet the demands of today’s digital content, offering ample storage for photos, videos, music, and applications.

One of the standout features of these drives is their 2.5-inch form factor, making them suitable for laptops, external enclosures, and other compact devices. The drives utilize SATA interfaces, providing faster data transfer rates compared to older IDE technologies. The SATA interface also enhances overall system performance by allowing for quicker boot-up times and faster access to stored data.

Another distinguishing characteristic of these Seagate models is their 5400 RPM rotational speed. While not the fastest in the market, this speed is well-balanced, ensuring a quieter operation and lower power consumption, which is particularly important for battery-operated devices like laptops. This energy efficiency extends the overall battery life, making it an ideal choice for mobile users who require long-lasting performance on the go.

The ST9250311CS and ST9160311CS also feature advanced data protection technologies, ensuring the integrity and safety of stored data. Their Shock Protection System helps to guard against data loss due to impacts and vibrations, while the integrated thermal management technology keeps the drives cool during operation. Additionally, data redundancy capabilities assist in minimizing the risk of data corruption.

In terms of compatibility, these drives support various operating systems, including Windows and Linux, making them a versatile option for a wide range of users. Their reliability is backed by Seagate’s reputation in the industry and comprehensive warranty options.

The Seagate ST9250311CS and ST9160311CS hard drives provide a solid blend of performance, reliability, and efficiency, catering to users in both personal and professional environments, capable of handling data-intensive tasks while ensuring long-term durability and sustained performance.

Seagate ST91603110CS manual Power-management modes, Power management modes, Active mode, Idle mode

Models: ST91603110CS ST9250311CS

2.9.4Power-management modes