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3.1
Standard features
Seagate® Enterprise Performance - 3.5 HDD SAS drives have the following standard features:
• 128 - deep task set (queue)
• 256MB data buffer (see Section 4.4)
• 3.0 / 6.0/12.0 Gb Serial Attached SCSI (SAS) interface
• Dedicated head load/unload zone
• Drive Self Test (DST)
• Embedded servo design
• Firmware downloadable using the SAS interface
• Flawed logical block reallocation at format time
• Industry standard SFF 3.5-in dimensions
• Integrated dual port SAS controller supporting the SCSI protocol
• Jumperless configuration
• No preventive maintenance or adjustments required
• Perpendicular recording technology
• Power Balance
TM
• Power Choice
• Programmable auto write and read reallocation
• Programmable logical block reallocation scheme
• Reallocation of defects on command (Post Format)
• SAS Power Disable
TM
• Seagate RAID Rebuild
• Self diagnostics performed when power is applied to the drive
• Support for SAS expanders and fanout adapters
• Supports up to 32 initiators
• User-selectable logical block sizes for 512E (512, 520, 524 or 528 bytes per logical block)
• User-selectable logical block sizes for 4096 native models (4096, 4160, 4192 or 4224bytes per logical block)
• Vertical, horizontal, or top down mounting
Seagate Enterprise Performance - 3.5 HDD SAS Self-Encrypting Drive models have the following additional features.
• 16 independent data bands
• Authenticated firmware download
• Automatic data encryption/decryption
• Controlled access
• Cryptographic erase of user data for a drive that will be repurposed or scrapped
• Drive locking
• Random number generator
3.2
Media description
The media used on the drive has a glass substrate coated with a thin film magnetic material, overcoated with a proprietary protective layer for
improved durability and environmental protection.
3.3
Performance
• 10K RPM spindle. Average latency = 3.3ms
• 1200MB/s maximum instantaneous data transfers
• Adaptive seek velocity; improved seek performance
• Background processing of queue
• Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system performance
• Supports start and stop commands (spindle stops spinning)
.
Note
There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypting Drive) models.
Seagate Enterprise Performance - 3.5 HDD SAS Product Manual, Rev. B
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