Seagate ST9900605SS ユーザーズマニュアル
Savvio 10K.5 SAS Product Manual, Rev. D
7
4.1
Standard features
Savvio
®
10K.5 SAS drives have the following standard features:
• 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 SFF 2.5-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 444 bits
• No preventive maintenance or adjustments required
• Dedicated head load/unload zone and automatic shipping lock
• Embedded servo design
• Self diagnostics performed when power is applied to the drive
• Zone bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• 64MB data buffer (see Section 5.5)
• Drive Self Test (DST)
• Background Media Scan (BMS)
• Idle Read After Write (IRAW)
• Power Choice
• 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 SFF 2.5-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 444 bits
• No preventive maintenance or adjustments required
• Dedicated head load/unload zone and automatic shipping lock
• Embedded servo design
• Self diagnostics performed when power is applied to the drive
• Zone bit recording (ZBR)
• Vertical, horizontal, or top down mounting
• Dynamic spindle brake
• 64MB data buffer (see Section 5.5)
• Drive Self Test (DST)
• Background Media Scan (BMS)
• Idle Read After Write (IRAW)
• Power Choice
Savvio
®
10K.5 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
• 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 an glass substrate coated with a thin film magnetic material, overcoated with
a proprietary protective layer for improved durability and environmental protection.
a proprietary protective layer for improved durability and environmental protection.
4.3
Performance
• Programmable multi-segmentable cache buffer
• 600MB/s maximum instantaneous data transfers.
• 10K RPM spindle. Average latency = 3.0ms
• Background processing of queue
• Supports start and stop commands (spindle stops spinning)
• Adaptive seek velocity; improved seek performance
• 600MB/s maximum instantaneous data transfers.
• 10K RPM spindle. Average latency = 3.0ms
• Background processing of queue
• Supports start and stop commands (spindle stops spinning)
• Adaptive seek velocity; improved seek performance