SEAGATE ST3250823NS - Manual

NL35 Series SATA Product Manual, Rev. B 1 1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate NL35 Series Serial ATA model drives: NL35 Series Serial ATA • ST3400832NS • ST3400632NS • ST3250823NS • ST3250623NS These drives provide ...

2 NL35 Series SATA Product Manual, Rev. B 1.1 About the Serial ATA interface The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include: • Easy installation and configuration with true plug-and-play connectivity. It is not neces...

NL35 Series SATA Product Manual, Rev. B 3 2.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the ST3400832NS, ST325082...

4 NL35 Series SATA Product Manual, Rev. B Table 1: Drive specifications Drive specification ST3400832NS ST3400632NS ST3250823NS ST3250623NS Formatted Gbytes (512 bytes/sector) 400 250 Guaranteed sectors 781,422,768 488,397,168 Bytes per sector 512 Default sectors per track 63 Default read/write head...

6 NL35 Series SATA Product Manual, Rev. B 2.2 Formatted capacity* *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 LBA mode When addressing these drives in LBA mode, all blocks (sectors) a...

NL35 Series SATA Product Manual, Rev. B 7 2.4 Recording and interface technology 2.5 Physical characteristics 2.6 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as...

8 NL35 Series SATA Product Manual, Rev. B values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications. 2.7 Start/stop times 2.8 Power specifications The drive re...

NL35 Series SATA Product Manual, Rev. B 9 *During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels. 2.8.1.1 Typical current profiles Figure 1. Typical 5V startup and operation current profile...

10 NL35 Series SATA Product Manual, Rev. B 2.8.2 Conducted noise Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line. • Using 12-volt power, the drive is expected to ...

NL35 Series SATA Product Manual, Rev. B 11 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. 2.9 Environmental specifications 2.9.1 Ambient temperature Ambi...

12 NL35 Series SATA Product Manual, Rev. B 2.9.5.2 Nonoperating shock The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 300 Gs based on a nonrepetitive half-sine shock pulse of 2 msec dur...

NL35 Series SATA Product Manual, Rev. B 13 2.11 Electromagnetic immunity When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table: 2.12 Reliability T...

14 NL35 Series SATA Product Manual, Rev. B 2.13 Agency certification 2.13.1 Safety certification The drives are recognized in accordance with UL 1950 and CSA C22.2 (950) and meet all applicable sections of IEC950 and EN 60950 as tested by TUV North America. 2.13.2 Electromagnetic compatibility Hard ...

NL35 Series SATA Product Manual, Rev. B 15 Australian C-Tick (N176) If these models have the C-Tick marking, they comply with the Australia/New Zealand Standard AS/NZS3548 1995 and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communi-cation Authority (ACA). 2...

NL35 Series SATA Product Manual, Rev. B 17 3.0 Configuring and mounting the drive This section contains the specifications and instructions for configuring and mounting the drive. 3.1 Handling and static-discharge precautions After unpacking, and before installation, the drive may be exposed to pote...

18 NL35 Series SATA Product Manual, Rev. B 3.2 Configuring the drive Each drive on the Serial ATA interface connects in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave relationship because each drive is considered a master in a point-to-point relationships. ...

NL35 Series SATA Product Manual, Rev. B 19 3.4 Drive mounting You can mount the drive in any orientation using four screws in the side-mounting holes or four screws in the bottom-mounting holes. See Figure 5 on page 19 for drive mounting dimensions. Follow these important mounting precautions when m...

NL35 Series SATA Product Manual, Rev. B 21 4.0 Serial ATA (SATA) interface These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6. For detailed information...

22 NL35 Series SATA Product Manual, Rev. B 4.2 Serial ATA device plug connector pin definitions Table 5 summarizes the signals on the Serial ATA interface and power connectors.. Notes: 1. All pins are in a single row, with a 1.27 mm (0.050”) pitch. 2. The comments on the mating sequence apply to the...

NL35 Series SATA Product Manual, Rev. B 23 4.3 Supported ATA commands The following table lists Serial ATA standard commands that the drive supports. For a detailed description of the ATA commands, refer to the Serial ATA: High Speed Serialized AT Attachment specification. See “S.M.A.R.T. commands” ...

NL35 Series SATA Product Manual, Rev. B 25 4.3.1 Identify Device command The Identify Device command (command code EC H ) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in Table 6 onpage 23. All...

NL35 Series SATA Product Manual, Rev. B 27 Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported Note. See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data. 128 Security status 0001 H 129–159 Seagate-reserved xxxx H 160...

NL35 Series SATA Product Manual, Rev. B 29 4.3.3 S.M.A.R.T. commands S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive moni-tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a fa...

NL35 Series SATA Product Manual, Rev. B 31 5.0 Seagate Technology support services Internet For information regarding Seagate products and services, visit www.seagate.com . Worldwide support is available 24 hours daily by email for your questions. Presales Support: [email protected] Technical Sup...

32 NL35 Series SATA Product Manual, Rev. B Customer Service Operations Warranty Service Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-rel...

NL35 Series SATA Product Manual, Rev. B 33 Index A ACA 15 acceleration 12 acoustics 5 , 12 Active 10 Active mode 10 actuator arm 8 Agency certification 14 altitude 11 Altitude, nonoperating 5 Altitude, operating 5 Ambient temperature 4 , 11 ambient temperature 7 , 8 Areal density 4 , 7 ATA commands ...