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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- 217. System includes intelligent RAID controller with adequate storage capacity
- 218. System supports at least one of RAID 1, 5, or 1/0
- 219. RAID support includes notification of failed drive
- 221. RAID subsystem supports manual replacement of failed drive
- Serviceability Requirements
Fault-Tolerant HardwareThis section provides design guidelines for fault-tolerance features and capabilities. 216. System supports multiple hard drives
Bus mastering is required for the drive controllers. Use of multiple hard drives and controllers in a server system provides both performance and reliability benefits. It is not a requirement that the drives all be physically housed in the server system chassis.
An intelligent RAID controller—where the controller itself has the capability to run the array management software locally rather than simply executing disk accesses for host-based array software—provides the benefit of reduced demands on the host processor or processors, thereby freeing those computing resources and allowing their use by other tasks. The intelligent RAID controller may be internal to the server chassis, or within an external drive enclosure. If an intelligent RAID controller is provided in a system, it should be capable of handling sufficient amounts of disk storage to fulfill the needs of the targeted usage model for that server. These needs will vary based on the storage-intensive nature of the server’s tasks.
RAID 1 and RAID 1/0 are recommended. RAID 5 is also acceptable. RAID 0 (for enhanced performance but no added reliability) is optional. 219. RAID support includes notification of failed driveRequired If RAID support is implemented, notification of a failed drive must be provided by the disk subsystem, with notification sent to the system administrator. 220. RAID subsystem supports automatic replacement of failed driveRequired for all Enterprise class systems Required for Basic and SOHO class systems deploying MSCS clustering The RAID subsystem must provide automatic replacement of a failed drive by a standby disk and must rebuild lost data without interfering with system operations. 221. RAID subsystem supports manual replacement of failed driveRequired for all Enterprise class systems Required for Basic and SOHO class systems deploying MSCS clustering The RAID subsystem must provide for manual replacement of a failed drive without shutting down or halting the system. The subsystem must also allow lost data to be rebuilt without interfering with system operations beyond some decreased performance of drive array access. Serviceability RequirementsThis section provides design guidelines for serviceability features and capabilities. 222. IA-32 system includes protected forced dump switch or other mechanism for system diagnosis
The system should include a protected switch or other mechanism to force an NMI on a stalled system. This device permits the system to perform a memory dump that can then be used for diagnosis of system failures. If implemented, this device must be protected in such a way that only an authorized administrator can perform this action. For additional information on the “dump switch” support in Windows 2000, which may be helpful for designers of IA-32 systems, please see http://www.microsoft.com/hwdev/debugging/dmpsw.htm. Note that this white paper presents only concept suggestions for designers and is not intended to provide precise implementation detail.
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