User manual SEAGATE CONSTELLATION SAS

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[. . . ] Product Manual Constellation SAS ® Standard Models Self-Encrypting Drive Models ST9500430SS ST9500431SS 100538693 Rev. C May 2009 Revision history Revision Date Sheets affected or comments Rev. C 02/03/09 03/05/09 06/11/09 Initial release. 50 and 58. ©2009, Seagate Technology LLC All rights reserved. [. . . ] There is no additional drain on the 12V supply. Constellation SAS Product Manual, Rev. C 21 Table 2: 500GB drive (Standard & SED model) DC power requirements 3. 0 Gbit mode Notes (Amps) +5V [5] [1] [7] ±5% 0. 33 (Amps) +12V [4] ±5% [2] 0. 10 6. 0 Gbit mode (Amps) +5V ±5% 0. 34 (Amps) +12V [4] ±5% [2] 0. 10 Voltage Regulation Avg idle current DCX Advanced idle current Idle_A Idle_B Idle_C/ Standby_Y Standby_Z Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Peak operating current (random read): Typical DCX Maximum DC Maximum (peak) DC Peak operating current (random write) Typical DCX Maximum DC Maximum (peak) DC Peak operating current (sequential read) Typical DCX Maximum DC Maximum (peak) DC Peak operating current (sequential write) Typical DCX Maximum DC Maximum (peak) DC 3 3 3 3 3 3 3 3 [1] [6] [1] 3 3 3 [5] [5] [1] [6] 0. 32 0. 23 0. 23 0. 23 0. 10 0. 08 0. 05 0. 02 0. 34 0. 24 0. 24 0. 25 0. 10 0. 08 0. 05 0. 02 0. 59 0. 90 0. 55 0. 65 0. 87 0. 03 0. 60 0. 97 0. 58 0. 65 1. 03 0. 03 0. 41 0. 44 0. 98 0. 14 0. 15 0. 54 0. 43 0. 46 1. 04 0. 14 0. 14 0. 54 0. 46 0. 49 1. 22 0. 14 0. 14 0. 56 0. 47 0. 50 1. 22 0. 14 0. 14 0. 56 0. 73 0. 77 1. 04 0. 12 0. 12 0. 20 0. 75 0. 80 1. 12 0. 12 0. 12 0. 20 0. 79 0. 84 1. 20 0. 12 0. 12 0. 20 0. 80 0. 85 1. 22 0. 12 0. 12 0. 20 [1] [2] [3] [4] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. N (number of drives tested) = 6, 35 Degrees C ambient. For +12 V, a ­10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 7, 200 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator. 22 Constellation SAS Product Manual, Rev. C [5] [6] [7] [8] [9] See +12V current profile in Figure 1. This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive. See paragraph 6. 3. 1, "Conducted noise immunity. " Specified voltage tolerance includes ripple, noise, and transient response. Operating condition is defined as random 8 block reads. During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track. General DC power requirement notes. Minimum current loading for each supply voltage is not less than 1. 7% of the maximum operating current shown. The +5V and +12V supplies should employ separate ground returns. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device. Parameters, other than spindle start, are measured after a 10-minute warm up. 6. 3. 1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. +5v +12v = = 250 mV pp from 100 Hz to 20 MHz. 250 mV pp from 20 KHz to 5 MHz. 6. 3. 2 Power sequencing The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down. Constellation SAS Product Manual, Rev. C 23 6. 3. 3 Current profiles The +12V (top) and +5V (bottom) current profiles for the Constellation drives are shown below. Figure 1. ST9500430SS & ST9500431SS model current profiles Note: All times and currents are typical. See Table 2 for maximum current requirements. 24 Constellation SAS Product Manual, Rev. [. . . ] It provides self-service access to critical applications, personalized content and the tools that allow our partners to manage their Seagate account functions. Submit pricing requests, orders and returns through a single, passwordprotected Web interface-anytime, anywhere in the world. spp. seagate. com spp. seagate. com supports Seagate resellers with product information, program benefits and sales tools. You may register for customized communications that are not available on the web. [. . . ]

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