Command name

Command code (in hex)

 

 

 

 

Security Erase Unit

F4H

 

Security Freeze

F5H

 

Security Set Password

F1H

 

Security Unlock

F2H

 

Seek

70H

 

Set Features

EFH

 

Set Max Address

F9H

 

Note: Individual Set Max Address

Address:

00H

commands are identified by the value

Password:

01H

placed in the Set Max Features regis-

Lock:

02H

ter as defined to the right.

Unlock:

03H

 

Freeze Lock:

04H

Set Max Address Extended

37H

 

Set Multiple Mode

C6H

 

Sleep

99H or E6H

 

S.M.A.R.T. Disable Operations

B0H / D9H

 

S.M.A.R.T. Enable/Disable Autosave

B0H / D2H

 

S.M.A.R.T. Enable Operations

B0H / D8H

 

S.M.A.R.T. Execute Offline

B0H / D4H

 

S.M.A.R.T. Read Attribute Thresholds

B0H / D1H

 

S.M.A.R.T. Read Data

B0H / D0H

 

S.M.A.R.T. Read Log Sector

B0H / D5H

 

S.M.A.R.T. Return Status

B0H / DAH

 

S.M.A.R.T. Save Attribute Values

B0H / D3H

 

S.M.A.R.T. Write Log Sector

B0H / D6H

 

Standby

96H or E2H

 

Standby Immediate

94H or E0H

 

Write Buffer

E8H

 

Write DMA

CAH

 

Write DMA Extended

35H

 

Write DMA FUA Extended

CDH

 

Write DMA Without Retries

CBH

 

Write Log Extended

3FH

 

Write Multiple

C5H

 

Write Multiple Extended

39H

 

Write Multiple FUA Extended

CEH

 

Write Sectors

30H

 

Write Sectors Without Retries

31H

 

Write Sectors Extended

34H

 

32

DB35.3 Series Serial ATA Product Manual, Rev. D

Page 38
Image 38
Seagate ST3750840SCE, ST3250820SCE, ST3300820SCE, ST3750640SCE, ST3400820SCE, ST3320820SCE, ST3500830SCE manual F4H

ST3400820SCE, ST3300820SCE, ST3750840SCE, ST3250820SCE, ST3750640SCE specifications

Seagate’s series of hard drives, including the ST3320820SCE, ST3500830SCE, ST3750640SCE, ST3250820SCE, and ST3750840SCE, comprise a robust lineup designed for both consumer and professional use.

The ST3320820SCE model features a storage capacity of 320GB and operates at a rotational speed of 7200 RPM, allowing for faster data access and improved overall performance. This drive is equipped with SATA interface, providing higher data transfer rates and enhanced connectivity options. Its 8MB cache enhances read and write speeds, thus making it suitable for multitasking environments.

In comparison, the ST3500830SCE offers a larger capacity with 500GB storage. This drive is also based on the same 7200 RPM speed standard, ensuring optimal performance for both gaming applications and data-heavy tasks. The SATA interface remains a central feature, promoting seamless integration into a range of PC configurations.

The ST3750640SCE takes the storage capabilities further, offering a generous 750GB space. It shares similar technological advancements such as the SATA interface and 7200 RPM speed, making it ideal for users needing extensive storage for multimedia files, software applications, and backups. The reliable performance alongside its increased capacity makes it a favored choice among professionals.

The ST3250820SCE model is targeted towards those needing a balance between performance and cost-efficiency. With a 250GB capacity, this drive provides ample space for everyday usage while maintaining a robust 7200 RPM speed and 8MB cache. This makes it an ideal option for entry-level systems and general-purpose computing.

Lastly, the ST3750840SCE offers up to 750GB of space, similar to the ST3750640SCE, but also incorporates advanced technologies for enhanced reliability and durability. This includes features like Seagate's Smart Align technology, which optimizes the drive's performance by efficiently managing data, especially with modern 4K sector drives.

Overall, these Seagate models cater to a wide spectrum of users, from casual home users to professionals requiring reliable and high-performance storage solutions. With a combination of speed, capacity, and innovative technologies, they stand out as solid choices in the hard drive market.