3.1Standard features

Constellation ES drives have the following standard features:

Perpendicular recording technology

1.5 / 3 / 6 Gb Serial Attached SCSI (SAS) interface

Integrated dual port SAS controller supporting the SCSI protocol

Support for SAS expanders and fanout adapters

Firmware downloadable using the SAS interface

128 - deep task set (queue)

Supports up to 32 initiators

Jumperless configuration.

User-selectable logical block size (512, 520, 524 or 528 bytes per logical block).

Industry standard 3.5-inch dimensions

Programmable logical block reallocation scheme

Flawed logical block reallocation at format time

Programmable auto write and read reallocation

Reallocation of defects on command (Post Format)

ECC maximum burst correction length of 400 bits

No preventive maintenance or adjustments required

Embedded servo design

Dedicated head load/unload zone

Self diagnostics performed when power is applied to the drive

Vertical, horizontal, or top down mounting

16 Mbyte data buffer (see Section 4.5).

Drive Self Test (DST)

Background Media Scan (BMS)

Idle Read After Write (IRAW)

Power Save

Constellation® ES Series SAS Self-Encrypting Drive models have the following additional features:

Automatic data encryption/decryption

Controlled access

Random number generator

Drive locking

16 independent data bands

Cryptographic erase of user data for a drive that will be repurposed or scrapped

Authenticated firmware download

3.2Media description

The media used on the drive has a aluminum substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durability and environmental protection.

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ConstellationES Series SAS Product Manual, Rev. D

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Seagate ST35000414SS, ST35000415SS manual Standard features, Media description