A reference for Designing Servers and Peripherals for the Microsoft® Windows® 2000 Server Family of Operating Systems Intel Corporation and Microsoft Corporation Publication Date—June 30, 2000
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- 161. System includes SCSI host controller and SCSI peripherals
- 162. SCSI controllers with external connectors that can function as cluster nodes provide multi-initiator support
- 163. Bus type is clearly indicated on connectors for all adapters, peripherals, cables, and terminators
- 164. Differential devices support DIFFSENS as defined in SPI-3 standard
- 165. Automatic termination circuit and SCSI terminators comply with SCSI 3
- 166. Terminator power is supplied to the SCSI bus, with over-current protection
- 167. External connector complies with SCSI 2 or later
- 169. SCSI connections use keyed and shrouded connectors
- 170. External devices provide SCSI-3-compliant termination
- 171. SCAM support is not present
- 172. Hardware supports the STOP/START UNIT command as defined in SBC specification
- 173. STOP/START UNIT command can be used to decrease power consumption
SCSI Controllers and PeripheralsSCSI is a flexible I/O bus that is used in the design of a variety of peripherals, including disk drives, CD drives, tape drives, magneto-optical drives, and scanners. This section presents the requirements for SCSI hardware that is compatible with Windows 2000, including adapters, peripherals, and any device that uses a SCSI controller. 161. System includes SCSI host controller and SCSI peripherals
The SCSI host adapter is the circuitry that serves as an interface between the system and one or more SCSI peripherals. A host adapter can be a card that plugs into the system’s expansion bus, such as a PCI card, or it can be designed directly into the system board set. The host controller must support PCI bus mastering, with bus mastering enabled by default.
Recommended: Fibre Channel, especially for servers running Windows 2000 Advanced Server or Datacenter Server. Note: Servers that implement Fibre Channel as the storage connection are not required to also provide SCSI capabilities. 162. SCSI controllers with external connectors that can function as cluster nodes provide multi-initiator supportRequired Multi-initiator support allows two SCSI controllers—each installed in a separate computer system—to coexist on a shared SCSI bus with a set of shared devices. For use in a system intended as a node in a cluster using shared SCSI, the SCSI IDs must be changeable from the default SCSI controller ID of 7, and the boot-time SCSI bus reset operation must be able to be disabled on each controller attached to a shared bus. For any SCSI controller with external connectors that can be used as a node in a cluster, as described previously, the connector must be clearly labeled as available for cluster connections. This labeling must be positioned so that it is clearly visible to a user when attaching external devices to the affected external connector. 163. Bus type is clearly indicated on connectors for all adapters, peripherals, cables, and terminatorsRequired Connectors for each Fibre Channel or SCSI adapter, peripheral, cable, and terminator must be clearly labeled to show the bus type. All external SCSI connectors must display the appropriate SCSI icon defined in SCSI 3 Parallel Interface (SPI) specification, Annex F, plus any clarifying abbreviations or acronyms. The following shows the related acronyms and their definitions:
164. Differential devices support DIFFSENS as defined in SPI-3 standardRequired Without DIFFSENS, the differential bus drivers or a single-ended device will suffer fatal thermal damage if a single-ended device is put on a differential bus. The specification for DIFFSENS is defined in Section 5.4.2 of the SPI-3 standard.
Parallel SCSI add-on adapters and on-board controllers must use automatic termination that allows a user to add external devices without removing the server case. Terminators used in the SCSI host adapter must be regulated terminators, which are also known as active, SCSI 3 SPI, SCSI 2 alternative 2, or Boulay terminators. SCSI termination built onto internal cables must meet the SCSI-3 specification. 166. Terminator power is supplied to the SCSI bus, with over-current protectionRequired The host adapter must supply terminator power (TERMPWR) to the SCSI bus for system-board implementations using PCI or another expansion bus. All terminators on the external SCSI bus must be powered from the TERMPWR lines in the SCSI bus. In addition, the circuit that supplies TERMPWR must have overcurrent protection built into it. Devices that provide TERMPWR must also provide some means of limiting the current through use of a self-resetting device. For example, a positive-temperature coefficient device or circuit breaker can be designed into the circuit. These devices open during an over-current condition and close after the condition ends.
If an external connector is implemented, it must meet the requirements defined in SCSI 2 or a later specification. 168. Controller and peripherals implement SCSI data protection signalRequired All SCSI peripherals and the SCSI host adapter must implement the SCSI bus data protection signal defined in the SPI standard, and data protection must be enabled by default. 169. SCSI connections use keyed and shrouded connectorsRequired For internal and external configurations, the SCSI bus cable must be plugged into shrouded and keyed connectors on the host adapter and devices. This ensures that the cable is properly positioned so the user cannot plug in cables incorrectly. For internal configurations, pin 1 orientation must be designated on one edge of the ribbon cable and also on the keyed connector for the SCSI peripheral device. For an external configuration, the SCSI connector must not use the same connector type as any other non-SCSI connector on the system.
External SCSI devices must provide termination compliant with the SCSI-3 specifications per the requirements in guideline “#165. Automatic termination circuit and SCSI terminators comply with SCSI 3.” 171. SCAM support is not presentRequired SCSI Configured AutoMatically (SCAM) capabilities must not be present on server systems or peripherals. SCAM is not supported by the Windows 2000 operating system; enabling SCAM can cause the system to become unstable or inoperable. 172. Hardware supports the STOP/START UNIT command as defined in SBC specificationRequired The hardware in SCSI peripherals must be able to fully recover from a software-initiated spin down without rebooting the system or cycling power. To properly support power management on SCSI drives and to ensure that the operating system responds to appropriate driver calls, be sure to correctly implement the STOP/START UNIT command as defined in the SCSI Block Commands specification. 173. STOP/START UNIT command can be used to decrease power consumptionRecommended Wherever appropriate, for example, for storage disks, the STOP UNIT command can be used to decrease power consumption of the base platform. 174. SCSI devices that support hot-plugging comply with Annex D of SPI-3Required Annex D of SPI-3 addresses SCSI device insertion and removal, with and without command activity. Directory: download download -> Performance Tuning Guidelines for Windows Server 2008 May 20, 2009 Abstract download -> Northern England’s set-jetting locations download -> Bbc archives: Beyond the programme download download -> Occupational health and safety download -> Dynatest 3031 lwd light Weight Deflectometer download -> Forth coming competitive exams download -> English Olympiad Tasks: 10 th form Аудіювання, 10 клас. Текст download -> Brush High School Morning Announcements Friday, September 05, 2014 all school download -> Year 9 The Arts — Music download -> Years 7 and 8 standard elaborations — Australian Curriculum: Music draft Download 1.64 Mb. Share with your friends:
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