Serverboard Features - Supermicro AS-2020A-8R User Manual

A+ Server 2020A-8R User's Manual
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Serverboard Features

At the heart of the 2020A-8R lies the H8DA8, a dual processor serverboard
designed to provide maximum performance. Below are the main features of the
H8DA8. See Figure 1-1 for a system block diagram of the chipset.
Processors
The H8DA8 supports single or dual 940-pin AMD Opteron
refer to our web site for a complete listing of supported processors.
Memory
The H8DA8 has eight 184-pin DIMM slots that can support up to 32 GB of regis-
tered ECC DDR266/200 or up to 16 GB of registered ECC DDR400/333 SDRAM.
(The maximum memory supported is halved if only one processor is installed.)
Memory in supported in both interleaved and non-interleaved confi gurations. See
Section 5-6 for details.
Onboard SCSI
Onboard SCSI is provided with Adaptec's AIC-7902 SCSI controller chip, which
supports dual-channel, Ultra320 SCSI at at maximum throughput of 320 MB/sec
for each channel. The H8DA8 provides two LVD Ultra320 SCSI ports. The SCSI
drives are hot-swappable units.
Note: The operating system you use must have RAID support to enable the hot-
swap capability and RAID function of the SCSI drives.
PCI Expansion Slots
The H8DA8 has six PCI expansion slots, which includes two 64-bit 133 MHz PCI-X
slots, two 64-bit 66 MHz PCI-X slots and two 32-bit 33 MHz PCI slots. (The 66 MHz
PCI-X #3 slot supports Zero Channel RAID.) An IPMI slot is also avaliable (in slot
#7), which supports a low profi le IPMI card.
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processors. Please