2.6.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 V line or an equivalent 15-ohm resistive load on the +5V line.

•Using 12V power, the drive is expected to operate with a maximum of 120mV peak-to-peak square-wave injected noise at up to 10MHz.

•Using 5V power, the drive is expected to operate with a maximum of 100mV peak-to-peak square-wave injected noise at up to 10MHz.

NOTE

Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.6.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 5%

2.6.4Power-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:

POWER MODES

HEADS

SPINDLE

BUFFER

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle_a

ID Biased

Rotating

Enabled

 

 

 

 

Idle_b

Parked

Rotating

Enabled

 

 

 

 

Idle_c

Parked

Rotating at lower RPM

Enabled

 

 

 

 

Standby

Parked

Stopped

Enabled

 

 

 

 

Sleep

Parked

Stopped

Disabled

 

 

 

 

•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 disk 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 enabled, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disk 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 disabled, 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 receiv- ing 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 transi- tion to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disk access is necessary.

CONSTELLATION ES.3 SERIAL ATA PRODUCT MANUAL, REV. A

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Seagate ST1000NM0033 manual Conducted noise, Voltage tolerance, Power-management modes, Active mode, Idle mode, Sleep mode
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ST1000NM0033 specifications

The Seagate ST1000NM0033 is a high-performance hard disk drive (HDD) designed specifically for enterprise applications. With a storage capacity of 1TB, it offers a balance of performance, reliability, and efficiency, making it suitable for data centers, cloud storage, and server environments. Built with Seagate's robust engineering, the ST1000NM0033 is ideal for handling heavy workloads and intensive data processes.

One of the standout features of this HDD is its rotational speed of 7200 RPM. This speed allows for quick data access and fast read/write operations, which is essential for data-intensive applications. The drive is equipped with 64MB of cache, further enhancing its efficiency by speeding up data retrieval for frequently accessed files.

Another key characteristic of the ST1000NM0033 is its SATA interface, which typically facilitates high-bandwidth data transfer rates. With a sustained data transfer rate of up to 160 MB/s, it ensures that large files, such as videos and databases, can be transferred swiftly, minimizing downtime and improving overall system performance.

The drive's durability is backed by Seagate’s Advanced Format technology, which enhances the format compatibility, storage efficiency, and reliability of the drive through improved error correction. With a mean time between failures (MTBF) rating of 1 million hours, users can trust the STA0033 to provide exceptional longevity and stability, critical in enterprise environments where data integrity is paramount.

Furthermore, the ST1000NM0033 supports various workload types due to its design optimized for multi-user environments. The drive can handle up to 180TB/year workload rate, making it capable of supporting applications with high data demand.

Environmentally, Seagate ensures that this model is energy efficient, contributing to reduced power consumption in enterprise settings. The drive operates effectively within a specified temperature range, ensuring that it remains operational under different environmental conditions.

In summary, the Seagate ST1000NM0033 is an excellent choice for businesses seeking a reliable, high-capacity HDD with robust performance features. Its combination of speed, efficiency, durability, and capacity positions it as a strong contender in the enterprise storage solutions market. With its extensive feature set, it continues to cater to the demanding needs of modern data centers and enterprise applications.
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