Optional Hardware; Intel Sas Entry Raid Module Axx4Sasmod - Intel SC5650SCWS Service Manual

For a complete list of supported memory DIMMs, see the links under
Channel Population Requirements for Memory RAS Modes
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The Intel Workstation System SC5650SCWS supports two memory RAS modes: Independent Channel Mode, and Mirrored
Channel Mode. The rules on channel population and channel matching vary by the RAS mode used. Note that support of
RAS modes that require matching DIMM population between channels (Mirroring) and require that ECC DIMMs be populated.
Independent Channel Mode
You can populate channels in any order in Independent Channel Mode. You can populate all three channels in any order and
have no matching requirements. All channels must run at the same interface frequency, but individual channels may run at
different DIMM timings (RAS latency, CAS latency, and so forth).
Mirrored Channel Mode
In Mirrored Channel Mode, the memory contents are mirrored between Channel A (D) and Channel B (E). As a result of the
mirroring, the total physical memory available to the system is half of what is populated. Mirrored Channel Mode requires that
Channel A (D) and Channel B (E) must be populated identically. DIMM slot populations within a channel do not have to be
identical but the same DIMM slot location across Channel A (D) and Channel B (E) must be populated the same. Channel C
(F) is unused in Mirrored Channel Mode.
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NOTE
For help with memory population rules, see the Intel

Optional Hardware

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Intel SAS Entry RAID Module AXX4SASMOD
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The Intel Workstation System SC5650SCWS provides a SAS module slot (J2J1) for the installation of an optional Intel
Entry RAID Module AXX4SASMOD. Once the optional Intel
Express* links from the ICH10R to PCI Express* Slot 2 (x8 mechanically, x4 electrically) switches to the SAS module slot.
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The optional Intel SAS Entry RAID Module AXX4SASMOD includes a SAS1064e controller that supports x4 PCI Express*
link widths and is a single-function PCI Express* end-point device. The SAS controller supports the SAS protocol as
described in the Serial Attached SCSI (SAS) Standard, version 1.0, and also supports SAS 1.1 features. A 32-bit external
memory bus off the SAS1064e controller provides an interface for Flash ROM and NVSRAM (Non-volatile Static Random
Access Memory) devices.
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The optional Intel SAS Entry RAID Module AXX4SASMOD provides four SAS connectors that support up to six hard drives
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in the Intel Workstation System SC5650SCWS.
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The optional Intel SAS Entry RAID Module AXX4SASMOD also provides a SGPIO (Serial General Purpose Input / Output)
connector and a SCSI Enclosure Services (SES) connector for non-expander backplane drive LED control.
Intel® Workstation System SC5650SCWS Service Guide
" A dditional Information and Software".
5
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Workstation System SC5650SCWS Technical Product Specification.
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SAS Entry RAID Module AXX4SASMOD is present, the x4 PCI
3BWorkstation System Features
19
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SAS