Seagate ST900MM0036 Savvio 10K.4 SAS Product Manual - Page 14
Standard features, Media description
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3.1 Standard features Savvio® 10K.4 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 520 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 • 16MB data buffer (see Section 4.5) • Drive Self Test (DST) • Background Media Scan (BMS) • Idle Read After Write (IRAW) • Power Choice Savvio® 10K.4 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 3.2 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. 6 Savvio 10K.4 SAS Product Manual, Rev. C