SEAGATE ST94811AB - Manuals

Momentus Blade Server 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 ST94811AB model driv...

Momentus Blade Server Product Manual, Rev. B 5 2.2 Formatted capacity 2.3 Default logical geometry LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above. 2.4 Physical organization...

6 Momentus Blade Server Product Manual, Rev. B 2.6 Physical characteristics 2.7 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications below are defined as follows: • Track-to-track seek time is an aver...

Momentus Blade Server Product Manual, Rev. B 7 2.9 Power specifications The drive receives DC power (+5V) through the interface connector. 2.9.1 Power consumption Power requirements for the drives are listed in the table on page 7. Typical power measurements are based on an average of drives tested,...

8 Momentus Blade Server Product Manual, Rev. B 2.9.1.1 Typical current profile Figure 2. Typical 5V startup and operation current profile 2.9.2 Conducted noise Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on the +5 volt line. Using 5-volt ...

Momentus Blade Server Product Manual, Rev. B 9 2.10 Environmental specifications 2.10.1 Ambient temperature Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 40°C (104°F) within the operating ambien...

Momentus Blade Server Product Manual, Rev. B 11 2.11 Acoustics Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a re...

12 Momentus Blade Server Product Manual, Rev. B 2.13 Reliability 2.14 Agency certification 2.14.1 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. 2.14.2 Electromagnet...

Momentus Blade Server Product Manual, Rev. B 15 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...

16 Momentus Blade Server Product Manual, Rev. B 3.2.2 Cable-select option Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28, CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To enable ca...

Momentus Blade Server Product Manual, Rev. B 17 4.0 ATA interface These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–5. The drive also supports the...

18 Momentus Blade Server Product Manual, Rev. B 4.1.1 Supported ATA commands The following table lists ATA-standard commands that the drive supports. For a detailed description of the ATA commands, refer to the Draft ATA-6 Standard. See “S.M.A.R.T commands” on page 24 for details and subcom-mands us...

Momentus Blade Server Product Manual, Rev. B 19 Security Unlock F2 H Seek 70 H Set Drive Parameters 91 H Set Features EF H Set Max Address F9 H Note: Individual Set Max com-mands are identified by the value placed in the Set Max Features register as defined to the right. Address: Password: Lock: Unl...

20 Momentus Blade Server Product Manual, Rev. B 4.1.2 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 the table on page...

Momentus Blade Server Product Manual, Rev. B 23 4.1.3 Set Features command This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter-rupt. If...

24 Momentus Blade Server Product Manual, Rev. B 4.1.4 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...

Momentus Blade Server Product Manual, Rev. B 25 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] Technica...

26 Momentus Blade Server 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 warrant...

Momentus Blade Server Product Manual, Rev. B 27 Index Numerics 3D Defense System 1 A acoustics 11 agency certification (regulatory) 12 altitude 9 ambient conditions 3 ambient temperature 6 , 9 areal density 5 ATA interface 17 ATA-standard commands 18 Australian C-Tick 13 autodetection 1 average seek...