General Description; Standard Features - Seagate ST900MM0006 Product Manual

3.0 G
ENERAL DESCRIPTION
Savvio drives provide high performance, high capacity data storage for a variety of systems including engineering
workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet
next-generation computing demands for performance, scalability, flexibility and high-density storage requirements.
Savvio drives are random access storage devices designed to support the Serial Attached SCSI Protocol as described in the
ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general
interface characteristics of this drive. Savvio drives are classified as intelligent peripherals and provide level 2 conformance
(highest level) with the ANSI SCSI-1 standard. The SAS connectors, cables and electrical interface are compatible with
Serial ATA (SATA), giving future users the choice of populating their systems with either SAS or SATA hard disk drives. This
allows you to continue to leverage your existing investment in SCSI while gaining a 6Gb/s serial data transfer rate.
Never disassemble the HDA and do not attempt to service items in the sealed enclosure (heads, media, actuator,
Note.
etc.) as this requires special facilities. The drive does not contain user-replaceable parts. Opening the HDA for
any reason voids your warranty.
Savvio drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility of destroying
or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed
from the drive.
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping
and handling. The shipping lock disengages and the head load process begins when power is applied to the drive.
The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that
provides excellent performance with minimal power dissipation.
3.1 S
TANDARD FEATURES
®
Savvio 10K.6 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 16 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 530 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 4.5)
• Drive Self Test (DST)
• Background Media Scan (BMS)
• Idle Read After Write (IRAW)
• Power Choice
™
• RAID Rebuild
S 10K.6 SAS P
AVVIO RODUCT
M , R . C
ANUAL EV
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