Apple G5 G5 Betriebsanweisung PDF herunterladen (Seite 79)

Chapter 6 Installing or Replacing Server Components 79

About PCI-X Cards for the Server

The server’s two PCI-X slots accept cards up to 12 inches long. (Some models come

with a card installed in one or both slots.) Install only expansion cards that are

compatible with Mac OS X and the PCI-X 2.2 standard, or standard PCI cards that are

compatible with Xserve G5 systems and Mac OS X.

Note: The frequency (often called speed) of both PCI-X slots is governed by the speed

of the slower card when two cards are installed. If only one card is installed and its

speed is 133 MHz, the card operates at 133 MHz. If a second card is installed, the 133

MHz card operates at a maximum speed of 100 MHz.

PCI-X Card Requirements

Criteria for PCI-X cards you can install in the Xserve server are summarized in the table

below.

Important: The PCI-X card must have a 3.3 V connector or a universal connector to fit

into the server’s expansion slots. Cards with a 5 V connector will not work in this server.

Power Consumption of Cards

Maximum power consumption for both expansion slots combined should not exceed

30 watts (W). Check the documentation that came with each card to be certain that

the cards don’t exceed this power consumption.

Installing a PCI-X Card or PCI Card

Follow these steps to install a PCI-X card. or PCI card

1 Shut down the server.

Be sure to alert users that the server will be unavailable for a period of time.

2 Disconnect the power cord from the back panel of the server. (If the cable-

management arm is not attached, you will also have to disconnect cables from the

back panel.)

PCI-X cards or PCI cards in Xserve G5

32 or 64-bit data width

33, 66, 100, or 133 MHz frequency

(133 MHz is available only when a single card is installed.)

If two cards are installed, both cards operate at the speed of the slower card.

3.3 volt (V) signaling

7 to 12 inches long

Warning: The only way to disconnect power completely is to unplug the power

cord. Make sure that the cord is disconnected before removing or installing any

components inside the server.

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Apple G5 G5 Betriebsanweisung Seite 79