Seagate ST33000651SS Constellation ES.2 SAS Product Manual - Page 16

Standard features, Media description, Performance

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4.1 Standard features Constellation ES.2 drives have the following standard features: • Perpendicular recording technology • 1.5 / 3.0 / 6.0 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 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 • 64 MB data buffer (see Section 5.5). • Drive Self Test (DST) • Background Media Scan (BMS) • Idle Read After Write (IRAW) • Power Save Constellation® ES.2 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 4.2 Media 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. 4.3 Performance • Programmable multi-segmentable cache buffer • 600MB/s maximum instantaneous data transfers. • 7200 RPM spindle. Average latency = 4.16ms • Background processing of queue • Supports start and stop commands (spindle stops spinning) • Adaptive seek velocity; improved seek performance Note. There is no significant performance difference between Self-Encrypting Drive and standard (nonSelf-Encrypting Drive) models. 8 Constellation ES.2 SAS Product Manual, Rev. C

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8
Constellation ES.2 SAS Product Manual, Rev. C
4.1
Standard features
Constellation ES.2 drives have the following standard features:
•
Perpendicular recording technology
•
1.5 / 3.0 / 6.0 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 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
•
64 MB data buffer (see Section 5.5).
•
Drive Self Test (DST)
•
Background Media Scan (BMS)
•
Idle Read After Write (IRAW)
•
Power Save
Constellation
®
ES.2 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
4.2
Media 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.
4.3
Performance
•
Programmable multi-segmentable cache buffer
•
600MB/s maximum instantaneous data transfers.
•
7200 RPM spindle. Average latency = 4.16ms
•
Background processing of queue
•
Supports start and stop commands (spindle stops spinning)
•
Adaptive seek velocity; improved seek performance
Note.
There is no significant performance difference between Self-Encrypting Drive and standard (non-
Self-Encrypting Drive) models.