系统启动时,BIOS 将识别需要地址空间的组件。BIOS 动态计算所需的保留地址空间容量,然后 BIOS 从 4 GB 中减去保留的地址空间以确定可用的空间容量。

如果计算机内存的总安装容量小于可用地址空间,则所有已安装计算机内存仅可用于操作系统。

如果计算机内存的总安装容量等于或大于可用地址空间,则操作系统无法使用已安装内存的一部分。

卸下内存

警 告 :开始执行 本节中 的 任 何步骤之 前 ,请 阅 读并遵 循《产品 信 息 指 南》中 的 安 全说明 。

注 意 :如果在内存升级过程中卸下了原始内存模块,请将它们与您的所有新模块分开放置(即使这些新模块也是从 Dell 购买的)。如果可能,请勿将原始内存模块与新内存模块成 对安装。否则,您的计算机可能无法正常启动。

注 意 :为防止静电损害计算机内部组件,请在触摸计算机的任何电子组件之前,先导去身上的静电。可以通过触摸计算机机箱上未上漆的金属表面导去身上的静电

注 :从 Dell 购买的内存在计算机的保修范围内。

1.阅读并遵循开始之前中的步骤。

2.卸下主机盖(请参阅卸下主机盖)。

3.将硬盘驱动器托盘转出计算机(请参阅将硬盘驱动器托盘转出计算机)。

警 告 :正 常运行 期间全缓冲内存 模块可 能会变得 很热。 在触摸内存 模块之 前 ,请确保 有 足够的时 间使 其 冷却。

4.向外按压内存模块连接器两端的固定夹。

1内存模块

2固定夹 (2)

5.拿住模块并向上拉动,以便从内存提升卡中提起内存模块。

如果模块很难卸下,请轻轻地前后摇动模块以将其从连接器中卸下。

6.将硬盘驱动器托盘转回到位(请参阅将硬盘驱动器托盘转回计算机中)。

7.装回主机盖(请参阅装回主机盖)。

安装内存

警 告 :开始执行 本节中 的 任 何步骤之 前 ,请 阅 读并遵 循《产品 信 息 指 南》中 的 安 全说明 。

注 意 :为防止静电损害计算机内部组件,请在触摸计算机的任何电子组件之前,先导去身上的静电。您可以通过触摸计算机机箱上未上漆的金属表面导去身上的静电。

1.阅读并遵循开始之前中的步骤。

注 意 :安装新内存模块之前,请从 Dell 支持 Web 站点 support.dell.com 下载适用于您的计算机的最新 BIOS。

2.卸下主机盖(请参阅卸下主机盖)。

3.将硬盘驱动器托盘转出计算机(请参阅将硬盘驱动器托盘转出计算机)。

4.如果要更换内存模块,请参阅卸下内存

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Dell 490 manual 卸下内存, 安装内存

490 specifications

The Dell PowerEdge 490 is a versatile and robust server designed to meet the demands of small to medium-sized enterprises. This server combines powerful performance with advanced features, making it suitable for various applications, from data storage to running critical applications.

One of the standout features of the Dell 490 is its support for dual Intel Xeon processors. The Xeon architecture provides exceptional processing power, enabling the server to handle complex tasks and multiple workloads simultaneously. This dual-processor capability is essential for businesses that require high availability and performance in their server operations.

The PowerEdge 490 supports up to 32 GB of DDR2 SDRAM, allowing for efficient multitasking and improved data access speed. The server's memory capacity ensures that it can support applications that require substantial RAM, which is increasingly important in today's data-driven environments.

Storage options are another highlight of the Dell 490. It features multiple drive bays that can support SAS, SATA, or SCSI hard drives, allowing businesses to customize their storage solutions based on their specific needs. The server supports a variety of RAID configurations, including RAID 0, 1, 5, and 10, providing options for data redundancy and performance optimization.

In terms of connectivity, the Dell PowerEdge 490 is equipped with several PCI Express slots, enabling the addition of various expansion cards for enhanced functionality. Whether it’s improved networking capabilities or graphics processing, the options for customization are plentiful. This adaptability ensures that the server can evolve alongside the organization’s growing needs.

The Dell 490 also incorporates advanced energy-efficient technologies, such as power management features designed to optimize energy consumption. This not only reduces operational costs but also makes it a more environmentally friendly option for businesses concerned about their carbon footprint.

In summary, the Dell PowerEdge 490 is a reliable server that boasts a combination of powerful processing capabilities, flexible storage options, and expandability. With its energy-efficient design and robust features, it remains an excellent choice for businesses looking to enhance their IT infrastructure while ensuring performance and adaptability for the future.