Manuale d’uso / di manutenzione del prodotto ST3450802SS del fabbricante Seagate
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Product Manual Cheetah ® NS 10K.2 SAS 100516228 Rev. F April 2012 ST3600002SS ST3450802SS.
© 2012 Seagate Technology LLC. All rights reserved. Publication number: 100516228, Rev. F, April 2012 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries.
Cheetah NS 10K.2 SAS Product Manual, Rev. F i Contents 1.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cheetah NS 10K.2 SAS Product Manual, Rev. F 1 1.0 Seagate Technology support services SEAGATE ONLINE SUPPORT and SERVICES For information regarding products and services, visit http://www.
2 Cheetah NS 10K.2 SAS Product Manual, Rev. F 2.0 Scope This manual describes Seagate Technology ® LLC, Cheetah ® NS 10K.2 SAS (Serial Attached SCSI) disk drives. Cheetah drives support the SAS Protocol specifications to the extent described in this manual.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 3 3.0 Standards, compliance and reference documents The drive has been developed as a system peripheral to the highest standards of design and construction.
4 Cheetah NS 10K.2 SAS Product Manual, Rev. F 3.2 Compliance 3.2.1 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 5 3.3 Reference documents SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 Applicable ANSI SAS documents SFF-8323 3.
6 Cheetah NS 10K.2 SAS Product Manual, Rev. F 4.0 General description Cheetah ® NS 10K.2 SAS drives provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 7 4.1 Standard features Cheetah NS SAS drives have the following standard features: • Perpendicular recording technology • 1.
8 Cheetah NS 10K.2 SAS Product Manual, Rev. F 4.5 Formatted capacities Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 9 5.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah NS SAS drives.
10 Cheetah NS 10K.2 SAS Product Manual, Rev. F 5.2.2 Format command execution time (minutes) ST3600002SS ST3450802SS Maximum (with verify) 182 129 Maximum (without verify) 101 68 Execution time measur.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 11 5.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations.
12 Cheetah NS 10K.2 SAS Product Manual, Rev. F The buffer segmentation scheme is set up or changed independently, having nothing to do with the state of RCD. When a write command is issued, if RCD=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a previous read or write command.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 13 6.0 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all inter- face timings, power supply voltages, environmental requirements and drive mounting constraints.
14 Cheetah NS 10K.2 SAS Product Manual, Rev. F a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are specified at Less than 10 errors in 10 8 seeks. Unrecoverable seek errors (Sense Key = 04h) are classified as drive failures.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 15 6.2.4 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that.
16 Cheetah NS 10K.2 SAS Product Manual, Rev. F the interval expires, the error rate is considered to be unacceptable. If the number of errors does not exceed the threshold before the interval expires, the error rate is considered to be acceptable. In either case, the inter- val and failure counters are reset and the process starts over.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 17 The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the drive.
18 Cheetah NS 10K.2 SAS Product Manual, Rev. F Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment. Short test (Function Code: 001b) The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 19 warranty information, refer to the standard terms and conditions of purchase for Seagate products on your pur- chase documentation. The remaining warranty for a particular drive can be determined using the Seagate web site: ( http://www.
20 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.0 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. 7.1 AC power requirements None. 7.2 DC power requirements The voltage and current requirements for a single drive are shown below.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 21 transient response. [6] During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to maximum track.
22 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.2.1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a defined frequency range. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 23 Figure 1. Typical ST3600002SS drive +5V and +12V current profiles Figure 2. Typical ST3450802SS drive +5V and +12V current profiles.
24 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.3 Power dissipation ST3600002SS Typical power dissipation under idle conditions in 6Gb operation is 10.03W (34.23 BTUs per hour) To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 3).
Cheetah NS 10K.2 SAS Product Manual, Rev. F 25 7.4 Environmental limits 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.
26 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. Non-operating 5% to 95% non-condensing relative humidity.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 27 d. Packaged Disk drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg).
28 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.4.4.2 Vibration a. Operating—normal The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding 10 - 300 Hz 1.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 29 exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulca- nized rubber, that can outgas corrosive compounds should be minimized or eliminated.
30 Cheetah NS 10K.2 SAS Product Manual, Rev. F 7.5 Mechanical specifications Refer to Figure 7 for detailed physical dimensions. See Section 9.3, “Drive mounting.” Figure 7. Physical dimensions Height: 1.013 in 25.73 mm Width: 3.999 in 101.57 mm Depth: 5.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 31 8.0 Defect and error management Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data integrity, perform drive self-maintenance, and validate proper drive operation.
32 Cheetah NS 10K.2 SAS Product Manual, Rev. F read or re-write attempt. The maximum level used by the drive in LBA recovery is determined by the read and write retry counts. Table 14 equates the read and write retry count with the maximum possible recovery time for read and write recovery of individual LBAs.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 33 8.3 SAS system errors Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual . The SSP Response returns information to the host about numerous kinds of errors or faults.
34 Cheetah NS 10K.2 SAS Product Manual, Rev. F ations performed by the drive. When a write command is received for an LBA marked for DAR, the auto-reallo- cation process is invoked and attempts to rewrite the data to the original location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 35 9.0 Installation Cheetah disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accommodate the drive.
36 Cheetah NS 10K.2 SAS Product Manual, Rev. F 9.2 Cooling The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that the drive operates within the temperature measurement guidelines described in Section 7.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 37 9.3 Drive mounting Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface.
38 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.0 Interface requirements This section partially describes the interface requirements as implemented on Cheetah drives. Additional infor- mation is provided in the SAS Interface Manual (part number 100293071).
Cheetah NS 10K.2 SAS Product Manual, Rev. F 39 10.2 Dual port support Cheetah SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address. The two ports run at the same link rate.
40 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.3 SCSI commands supported Table 17 lists the SCSI commands supported by Cheetah drives. Table 17: Commands supported by Cheetah ® NS 10K.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 41 Non-medium Error page (06h) Y Pages Supported list (00h) Y Read Error Counter page (03h) Y Read Reverse Error Counter page (04h) N Self-test Results page.
42 Cheetah NS 10K.2 SAS Product Manual, Rev. F Reassign Blocks 07h Y Receive Diagnostic Results 1Ch Y Supported Diagnostics pages (00h) Y Translate page (40h) Y Release 17h Y Release (10) 57h Y Reques.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 43 [1] Cheetah NS drives can format to 512, 520, 524, or 528 bytes per logical block. [2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.
44 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.3.1 Inquiry data Table 18 lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS Interface Manual .
Cheetah NS 10K.2 SAS Product Manual, Rev. F 45 On drives requiring unique saved values, the required unique saved values are stored into the saved val- ues storage location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.
46 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.3.2.1 ST3600002SS Mode Sense data HEADER DATA: 00 00 05 12 8B 00 10 02 MODE PAGES: DEF 80 06 00 80 0F 00 00 00 CHG 80 06 B7 C0 8F 00 00 00 DEF 81 0A C.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 47 10.3.2.2 ST3450802SS Mode Sense data HEADER DATA: 00 00 05 12 8B 00 10 02 MODE PAGES: DEF 80 06 00 80 0F 00 00 00 CHG 80 06 B7 C0 8F 00 00 00 DEF 81 0A C.
48 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.4 Miscellaneous operating features and conditions Table 19 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feature or condition is not supported.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 49 10.4.1 SAS physical interface Figure 10 shows the location of the SAS device connector J1. Figures 11 and 12 provide the dimensions of the SAS device. Details of the physical, electrical, and logical characteristics are provided within this section.
50 Cheetah NS 10K.2 SAS Product Manual, Rev. F Figure 11. SAS connector dimensions C OF DATUM B L 5.08 1.27 (6X) 1.27 (14X) 15.875 0.35MIN 15.875 33.43 0.05 B 4.90 0.08 0.84 0.05 (22X) 0.15 B P15 P1 S7 S1 SEE Detail1 0.30 0.05 (4X) 4.00 0.08 0.15 D 0.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 51 Figure 12. SAS connector dimensions 10.4.2 Physical characteristics This section defines physical interface connector. 10.4.3 Connector requirements Contact your preferred connector manufacturer for mating part information.
52 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.4.4 Electrical description SAS drives use the device connector for: • DC power • SAS interface • Activity LED This connector is designed to either plug directly into a backpanel or accept cables.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 53 10.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 13. The receiver is AC cou- pling to eliminate ground shift noise. Figure 13. SAS transmitters and receivers 10.
54 Cheetah NS 10K.2 SAS Product Manual, Rev. F The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +3.3 volt supply through an appropriate current limiting resistor. The LED and the current limiting resis- tor are external to the drive.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 55 10.5.2.1.2 Receive eye mask Figure 14 describes the receive eye mask. This eye mask applies to jitter after the application of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 dB/decade below a frequency of ((bit rate) / 1.
56 Cheetah NS 10K.2 SAS Product Manual, Rev. F The leading and trailing edge slopes of figure 14 shall be preserved. As a result the amplitude value of Z1 is less than that given in table 26 and Z1 TO.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 57 10.5.2.2 Transmitter signal characteristics Table 25 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero-length test load. All specifications are based on differential measurements.
58 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.5.2.3 Receiver signal characteristics Table 26 defines the compliance point requirements of the signal at the receiver end of a TxRx connection as measured into the test loads specified in figure 17 and figure 18.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 59 10.5.2.3.2 Receiver jitter tolerance Table 28 defines the amount of jitter the receiver shall tolerate. 10.5.2.3.3 Compliant jitter test pattern (CJTPAT) The CJTPAT within a compliant protocol frame is used for all jitter testing unless otherwise specified.
60 Cheetah NS 10K.2 SAS Product Manual, Rev. F 10.5.2.4 Electrical TxRx connections TxRx connections may be divided into TxRx connection segments. In a single TxRx connection individual TxRx connection segments may be formed from differing media and materials, including traces on printed wir- ing boards and optical fibers.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 61 mitter signal at the test points on the required test loads. The transmitter uses the same settings (e.g., pre- emphasis, voltage swing) with both the zero-length test load and the TCTF test load. The signal specifications at IR are met under each of these loading conditions.
62 Cheetah NS 10K.2 SAS Product Manual, Rev. F Figure 18 shows the zero-length test load. Figure 18. Zero-length test load Figure 19 shows an ISI loss example at 3.0Gb/s. Figure 19. ISI loss example at 3.0Gb/s Figure 20 shows an ISI loss example at 1.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 63 10.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equiva- lent impedance as specified in table 29.
64 Cheetah NS 10K.2 SAS Product Manual, Rev. F.
Cheetah NS 10K.2 SAS Product Manual, Rev. F 65 Index Numerics 12 volt pins 53 5 volt pins 53 6 Gbps 63 A abort task set function 38 AC coupling 53 AC power requirements 20 ACA active status 48 ACA act.
66 Cheetah NS 10K.2 SAS Product Manual, Rev. F environmental limits 25 requirements 13 environmental control 28 error management 31 rates 13 errors 31 EU RoHS directive 29 F FCC rules and regulations .
Cheetah NS 10K.2 SAS Product Manual, Rev. F 67 N noise audible 3 noise immunity 22 non-operating 26 , 28 temperature 25 non-operating vibration 28 O office environment 28 operating 26 , 27 , 28 option.
68 Cheetah NS 10K.2 SAS Product Manual, Rev. F switches 35 synchronized spindle operation 48 system chassis 37 T task management functions 38 Abort task set 38 Clear ACA 38 Clear task set 38 terminate.
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Seagate ST3450802SS è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Seagate ST3450802SS - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Seagate ST3450802SS imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Seagate ST3450802SS ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Seagate ST3450802SS, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Seagate ST3450802SS.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Seagate ST3450802SS. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Seagate ST3450802SS insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
