HP ProLiant ML570 Quickspecs page 7

QuickSpecs
Standard Features
Availability Availability Availability Availability Advanced Memory Protection Technology – delivers unsurpassed memory protection and server Advanced Memory Protection Technology Advanced Memory Protection Technology Advanced Memory Protection Technology
availability:
Advanced ECC Memory
ECC protection provides the ability to detect and correct single bit memory errors while Advanced
ECC extends this coverage to include protection against multiple simultaneous errors on a DIMM.
Advanced ECC detects and corrects 4bit memory errors that occur within a single DRAM chip on
a DIMM. Advanced ECC algorithms work in combination with industry standard ECC DIMMS.
Advanced Memory Protection Configurations Advanced Memory Protection Configurations Advanced Memory Protection Configurations Advanced Memory Protection Configurations
Online Spare Memory
Offers a higher level of memory protection than Advanced ECC alone. The system is configured
with a spare bank of memory. If the number of single-bit correctable errors on a bank exceeds the
pre-defined error threshold, the failing bank will fail over to the Online Spare bank without
intervention or server interruption. The failed memory can then be replaced at the user's
convenience during a scheduled maintenance window.
Single-Board Mirrored Memory
Single-board mirrored memory provides a higher level of availability than Advanced ECC and
Online Spare Memory because it protects against multi-bit errors. Single-board Mirrored Memory
uses a single memory board that is configured with a mirrored/redundant set of memory. The
system writes to both sets of memory, but reads from one. If a memory bank has a multi-bit error
or full DIMM failure, the system simply reads from the mirrored bank instead. This process occurs
without intervention or server interruption, and the failed DIMM can be replaced during a
regularly scheduled shutdown.
Hot Plug Mirrored Memory
Hot Plug Mirrored Memory is a fault-tolerant memory feature that provides a higher level of
availability than Advanced ECC, Online Spare Memory, or Single-Board Mirrored Memory
because it protects against multi-bit errors and does not require any server downtime to replace
failed DIMMs. Hot Plug Mirrored Memory requires that two memory boards be installed, one an
exact mirror of the other, which run in parallel and provide protection against multi-bit memory
errors. When configured for Hot Plug Mirrored Memory, the system writes to both memory boards,
but reads from one. If a read error occurs, the system fails over to the redundant memory board.
At that point the memory board containing the failed DIMMs can be hot replaced. Once the failed
DIMMs are replaced and the memory board re-installed into the server, the system goes back to
full mirrored status. All this occurs without bringing the server down.
NOTE: NOTE: NOTE: NOTE: Hot Plug Mirrored Memory and Dual-Board Online Spare Memory require the use of two
memory cards. All HP ProLiant ML570 G2 servers ship standard with a single memory board. The
second memory board is optional (P/N 236844-B21).
NOTE: All Advanced Memory Protection modes are user configurable through the ROM-Based NOTE: NOTE: NOTE:
Setup Utility (RBSU) and viewable through Systems Insight Manager and the Integrated
Management Log (IML.).
PCI-X Hot Plug Technology (Four 64bit/100MHz PCI-X hot plug slots available)
Two 600W Hot Plug Power Supply standard
Six Hot Plug System Fans standard
DA - 11421 North America — Version 53 — December 16, 2005
HP ProLiant ML570 Generation 2 (G2) HP ProLiant ML570 Generation 2 (G2) HP ProLiant ML570 Generation 2 (G2) HP ProLiant ML570 Generation 2 (G2)
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