Product Manual: Ultrastar DC HC620 (Hs14) SAS OEM
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Hard disk drive specifications Ultrastar® DC HC620 (previously known as Ultrastar Hs14 14TB/15TB) 3.5 inch Serial Attached SCSI hard disk drive Model: HSH721414AL52M0/4 HSH721414AL42M0/4 HSH721415AL52M0/4 HSH721415AL42M0/4 Revision 1.6 31 January 2020 1 Hard Disk Drive Specification Publication Disclaimer Information One MB is equal to one million bytes, one GB is equal to one billion bytes and one TB equals 1,000GB (one trillion bytes) when referring to storage capacity. Accessible capacity will vary from the stated capacity due to formatting and partitioning of the drive, the computer’s operating system, and other factors. The following paragraph does not apply to any jurisdiction where such provisions are inconsistent with local law: THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 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Pictures shown may vary from actual products. 2 Hard Disk Drive Specification Table of contents 1 General ................................................................................................................................................................ 18 Introduction ..................................................................................................................................... 18 Glossary ........................................................................................................................................... 18 General caution ............................................................................................................................... 19 References ........................................................................................................................................ 19 2 General features .................................................................................................................................................. 20 Part 1. Functional specification ....................................................................................................................... 21 3 Fixed disk subsystem description ....................................................................................................................... 22 Control Electronics ......................................................................................................................... 22 Head disk assembly ........................................................................................................................ 22 Actuator ........................................................................................................................................... 22 4 Drive characteristics ............................................................................................................................................ 23 Default logical drive parameters ................................................................................................... 23 Data sheet ........................................................................................................................................ 25 World Wide Name Assignment ...................................................................................................... 25 Drive organization .......................................................................................................................... 25 Drive Format ............................................................................................................................ 25 Cylinder allocation................................................................................................................... 25 Zone Layout .............................................................................................................................. 26 Performance characteristics ........................................................................................................... 28 Command overhead ................................................................................................................. 28 Mechanical positioning ............................................................................................................ 29 Drive ready time ...................................................................................................................... 29 Operating modes ...................................................................................................................... 30 5 Defect flagging strategy ....................................................................................................................................... 31 Shipped format ................................................................................................................................ 31 6 Specification ........................................................................................................................................................ 32 Electrical interface .......................................................................................................................... 32 Connector location ................................................................................................................... 32 29 pin Serial Attached SCSI (SAS) Connector Definition .................................................... 33 Voltage and Ground Signals ................................................................................................... 34 Ready LED output ................................................................................................................... 34 Environment .................................................................................................................................... 35 Temperature and humidity ..................................................................................................... 35 Storage Requirements ............................................................................................................. 36 Corrosion test ........................................................................................................................... 36 Atmospheric condition ............................................................................................................. 36 DC power requirements.................................................................................................................. 37 Input voltage ............................................................................................................................ 37 Power supply current (typical1) .............................................................................................. 38 Power line noise limits ............................................................................................................ 39 Power Consumption Efficiency ............................................................................................... 39 Reliability ........................................................................................................................................ 40 Data integrity ........................................................................................................................... 40 Cable noise interference .......................................................................................................... 40 Load/Unload ............................................................................................................................. 40 Start/stop cycles ....................................................................................................................... 40 Preventive maintenance