Hitachi HUS157373EL3800 Power supply current, Current transition for +12V, Start and Stop time

Page 16

4.2 Power supply current

+12V Current [A]

3.0

2.0

1.0

0

0

2

4

6

T0 T1

T0-T1: Power up

T1-T2: Spin-up

T2-T3: Servo initialize

T3-T4: Upload Code etc.

T1-T4: Start up

Peak

8

10

12

14

16

18

20

 

 

 

 

 

 

Time [s]

 

 

 

T2

T3

T4

 

T0 : Power on

T1 : Accept start unit command or Auto Spin-up T4 :Ready

Fig 4.1 Current transition for +12V

Note: A retry Spin-up operation may be attempted during the Start up process.

4.3Spindle Start and Stop

4.3.1Start and Stop Time

Table 4.2 Start and Stop time

Item

Typical

 

unit

Start

25

Note 1

s

Stop

25

Note 2

s

Note 1. Start time means that the time of becoming ready, after DC power has been applied in the case of Enable Auto Start mode, or after Start Unit command (immed=0) has accepted in other case. If internal retry is executed during the Start- up operation, the Start time may exceed typical value. It is recommended to have 60 seconds for the Start time. In the case of a spindle start-up failure, the time of an internal retry operation is 130 seconds maximum.

Caution

Note 2. Beginning of stop time is basically decided by +12v DC power off. In case of +5v DC power off only, stop time is 65sec(typ).

Do not move the drive until motor stop completely.

Stop time means that the time to stop the spindle rotation, after DC power has been shut off, or after stop operation has started.

Drawing No. Sheet No. Revision 5

K6602906

16/46

2003/6/12

Image 16
Contents Scsi OEM ManualK6602906 2003/6/12 Revision ControlHeadline of safety caution General cautions for safetyInfluence for environment Safety cautions for this product Warranty and Limited Liability Table of Contents Page Features ModelsStandards and Related Documents Characteristics CharacteristicsDescription K6602906 10/46 2003/6/12Environmental conditions and reliability Environmental conditions and reliabilityK6602906 11/46 2003/6/12 Vibration test direction Shock test direction UnitW Power measurement OperatingUltrastar 15K73-73 Ultrastar 15K73-36 IOs per second DC power Interface DC Power RequirementPower supply current Current transition for +12VSpindle Start and Stop Start and Stop Time Start and Stop timePage Interface Cable Daisy Chain Connecting MethodsK6602906 18/46 2003/6/12 Page Scsi Interface Page Scsi Commands Supported Mounting and Handling Good case Bad case K6602906 24/46 2003/6/12Mounting dimensions K6602906 25/46 2003/6/12Temperature Limits unit C K6602906 26/46 2003/6/12Precautions for handling Maintenance Interface connectors Physical interfaceInterface cable WIDE, Single-ended mode Interface cable WIDE, LVD modeConnector Layout Wide LVD drive SCA-2 LVD drive Dimension 101.6±0.2535±0.25 50.8±0.5 K6602906 32/46 2003/6/12Pin assignment Pin assignment of Scsi Bus Connector C1 WIDE, LVD mode GND Pin assignment of Scsi Bus Connector C1 SCA-2, LVD mode BSY +BSY ATNPin assignment of Option Jumper Connector C3 Wide LVD drive Pin assignment of Auxiliary Connector C4 Wide LVD driveK6602906 37/46 2003/6/12 NW drive NC drive K6602906 38/46 2003/6/12Jumper Socket setting Jumper connector layout Wide LVD driveJumper connector layout SCA-2 LVD drive SAC-2 LVD driveOption Jumper Connector C3 Scsi ID #Scsi ID Disable Auto Start K6602906 43/46 2003/6/12Force Single-Ended bus mode Enable Delayed StartWrite Protect Scsi bus Terminator PowerK6602906 45/46 2003/6/12 Jumper socket Extension connectorK6602906 46/46 2003/6/12

HUS157373EL3800, HUS157373EL3600, HUS157336EL3600, HUS157336EL3800 specifications

The Hitachi HUS157336EL3600 and HUS157373EL3600, along with the HUS157336EL3800 and HUS157373EL3800, are part of the Hitachi Virtual Storage Platform (VSP) E-series, designed to address the demanding needs of enterprise environments. These high-capacity storage systems are tailored for data-intensive applications, ensuring reliability, performance, and scalability.

A standout feature of the HUS157336EL and HUS157373EL series is their exceptional storage capacity, with the former offering up to 36TB and the latter providing up to 73TB of available storage. This substantial capacity makes them ideal for organizations storing vast amounts of unstructured data, including multimedia files, large databases, and backup solutions.

Both models leverage advanced data protection technologies. Hitachi’s Data Protection Manager (DPM) technology provides robust backup and recovery solutions, enabling businesses to safeguard their critical information effortlessly. Additionally, features like snapshots and replication guarantee data integrity and accessibility, even in the event of hardware failure or accidental deletions.

Performance is another critical aspect. These systems utilize Hitachi’s proprietary Flash of Flash (FoF) technology, which significantly enhances input/output operations per second (IOPS) while minimizing latency. This is particularly beneficial for mission-critical applications that require rapid data retrieval and processing.

Moreover, the HUS157336EL and HUS157373EL series support automated tiering and storage optimization. This allows organizations to manage their storage resources efficiently, moving less frequently accessed data to lower-cost storage media without any disruption to daily operations. This feature not only helps manage costs but also enhances the overall performance of the system.

Both the HUS157336EL3600 and HUS157373EL3600 are built with energy efficiency in mind, featuring power-saving technologies that reduce energy consumption while maintaining top-notch performance. This focus on sustainability aligns with the growing need for organizations to operate environmentally responsibly.

In summary, the Hitachi HUS157336EL3600, HUS157373EL3600, HUS157336EL3800, and HUS157373EL3800 exemplify cutting-edge storage solutions that cater to the needs of modern enterprises. With high capacity, advanced data protection, exceptional performance, automated tiering, and energy efficiency, these systems represent a significant investment in securing and managing critical data assets for businesses across various industries.