User manual MAXTOR ST373405FC VOLUME 1

[. . . ] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah 73LP FC Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST373405FC/FCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336605FC/FCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cheetah 73LP FC Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST373405FC/FCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ST336605FC/FCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Manual, Volume 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . © 2002 Seagate Technology LLC All rights reserved May 2002 Publication number: 100109944, Rev. D Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology LLC. [. . . ] 6. 2. 3 Current profiles Figure 3 identifies the drive +12V current profile. The current during the various times is as shown: T0 T1 T2 T3 Power is applied to the drive. Spindle begins to accelerate under current limiting after performing internal diagnostics. Spindle is up to speed and the Head-Arm restraint is unlocked. Note: All times and currents are typical. See Table 1 for maximum current requirements. +12 Volt Current during spindle start ­ Typical Amperes Envelope of waveform Average value of waveform 3. 0 A 2. 0 1. 0 0. 0 T0 T1 T2 0 2 T3 T4 4 6 8 Seconds 10 12 14 16 Figure 3. Typical ST373405FC drive +12V current profile Cheetah 73LP FC Product Manual, Rev. D 21 +12 Volt Current during spindle start ­ Typical Amperes Envelope of waveform 3. 0 A 2. 0 1. 0 Average value of waveform 0. 0 T0 T1 T2 T3 T4 0 2 4 6 8 Seconds 10 12 14 16 Figure 4. Typical ST336605FC drive +12V current profile +5 Volt Current during spindle start ­ Typical Amperes 3. 0 A 2. 0 1. 0 Nominal (average) DC curve AC Component 0. 0 T0 T1 T2 T3 T4 T5 0 2 4 6 8 Seconds 10 12 14 16 Figure 5. Typical ST373405FC drive +5V current profile 22 Cheetah 73LP FC Product Manual, Rev. D +5 Volt Current during spindle start ­ Typical Amperes 3. 0 A 2. 0 1. 0 Nominal (average) DC curve AC Component 0. 0 T0 T1 T2 T3 T4 T5 0 2 4 6 8 Seconds 10 12 14 16 Figure 6. Typical ST336605FC drive +5V current profile Cheetah 73LP FC Product Manual, Rev. D 6. 3 Power dissipation 23 ST373405FC Typical power dissipation under idle conditions is 11. 3 watts (38. 6 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 7). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3. 4123. 1. 800 1. 600 1. 400 5V A 12V A Watts 17 15 Watts 0. 800 0. 600 0. 400 0 50 100 I/Os per Second Figure 7. input/output operations per second Amperes 1. 200 1. 000 13 11 150 200 ST336605FC Typical power dissipation under idle conditions is 9. 6 watts (32. 8 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 7). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3. 4123. 1. 800 1. 600 1. 400 5V A 12V A Watts 17 15 Watts 0. 800 0. 600 0. 400 0 50 100 150 200 250 I/Os per Second Figure 8. input/output operations per second Amperes 1. 200 1. 000 13 11 24 6. 4 Environmental limits Cheetah 73LP FC Product Manual, Rev. D Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58. 7°F (14. 8°C). Maximum wet bulb temperature is 82°F (28°C). Operating With cooling designed to maintain the case temperature, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that these temperatures are not exceeded. Air flow may be needed to achieve these temperature values (see Section 8. 4). [. . . ] D Customer Service (CSO) Warranty Service Seagate offers worldwide customer support for Seagate drives. Seagate direct OEM, Distribution and System Integrator customers should contact their Seagate service center representative for warranty information. Other customers should contact their place of purchase. Authorized Service Centers If you live outside the US, you can contact an Authorized Service Center for service. USA/Canada/Latin America Support Services Presales Support Call Center Disc: Tape: Toll-free 1-877-271-3285 1-800-626-6637 Direct dial +405-936-1210 +1-714-641-2500 FAX +1-405-936-1683 +1-714-641-2410 Technical Support (SeaFONE) 1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; Tape and Server Appliance: +1-405-936-1683 SeaFAX SeaTDD 1-800-SEAGATE +1-405-936-1687 Toll-free 1-800-468-3472 Direct dial +1-405-936-1456 FAX / Internet +1-405-936-1462 Warranty Service Call Center USA, Mexico and Latin America Canada Memofix1 1-800-636-6349 1-800-624-9857 +1-905-660-4936 +1-905-812-8099 Adtech* Brazil MA Centro de Serviços* +1-905-660-4951 www. memofix. com +1-905-812-7807 www. adtech1. com -- +55-21-2509-7267 +55-21-2507-6672 e-mail: centro. de. servicos. brasil@seagate. com European Support Services For European customer support, dial the toll-free number for your specific country for presales support, technical support, SeaFAX and warranty service. If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 A. M. [. . . ]