Apple xserve early 2008 User Manual

							Xserve (Late 2006) Take Apart — ID Tab 121
Gently grasp the ID tab and pull up on it to disengage it from the channel that it slides along 
2.  
in the enclosure.  
Pull the ID tab through the slot in the rear panel to remove it.
3.  
						

							Xserve (Late 2006) Take Apart — Enclosure 12 2
Enclosure
Note: Because you must remove both processor heat sinks during the preliminary steps of 
this procedure, you must replace the thermal grease on both processors when reassembling 
the Xserve. New grease and alcohol wipes for cleaning off the previous grease are supplied 
with the replacement enclosure. The grease and wipes are also available through a separate 
thermal grease kit on GSX; order part number 076-1237, which contains enough grease for both 
processors.
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the Xserve; place the bottom housing on a sturdy, flat surface; and 
remove the following:Both power supplies
• 
All Apple drive modules
• 
Optical drive
• 
PCI riser cards and any expansion cards in both slots
• 
Airflow duct
• 
Fan array
• 
Front panel board cable
• 
Backplane-to-logic board I/O cable
• 
Optical drive cable
• 
Locking mechanism rod
• 
Front panel board
• 
Drive interconnect backplane
• 
Power distribution board cable
• 
Power distribution board
• 
Both processor heat sinks
• 
Logic board
• 
ID tab
•  
						

							Xserve (Late 2006) Take Apart — Enclosure 12 3
Part Location
Procedure
Once all other components have been removed from the enclosure, what is left is the enclosure 
itself. 
						

							 Service Source
© 2006, 2007, 2008 Apple Inc. All rights reserved.
Troubleshooting
Xserve (Late 2006) 
						

							Xserve (Late 2006) Troubleshooting — General Information 12 5
General Information
What’s New
The following table shows the main feature differences between models at product introduction:
FeatureXserve (Late 2006) Xserve (Early 2008)
Processor  Intel Dual-Core Xeon 64-bit Intel Quad-Core Xeon 64-bit
On-Chip L2 Cache 4 MB shared per processor 12 MB by two cores
System Memory PC2-5300 (667 MHz) DDR2 FB-
DIMM (240-pin) 1 GB (2x512) PC2-5300 (800 MHz) DDR2 FB-
DIMM (240-pin) 2 GB (2x1GB)
Graphics Card ATI Radeon X1300 RV515 ATI Radeon X1300 RV516
Hard Drive configurations 80 GB Serial ATA/300 7200 rpm; 
73 GB; 300 GB; 750 GB 80 GB Serial ATA/300 7200 rpm; 
73 GB; 300 GB; 750 GB; 1TB
Optical Drive Combo or SuperDrive SuperDrive
FireWire ports FW 400 (one at front); FW 800 
(two at rear) FW 800 (two at rear)
USB ports USB 2.0 (two at rear) USB 2.0 (one at front; two at 
rear)
Additional features include: Serial-Attached-SCSI (SAS) drive modules supported
• 
Power supply redundancy supported
• 
Built-in video out via mini-DVI port
• 
PCI-X and PCI-E expansion cards supported
• 
Independent 1.33 gigahertz (GHz) system bus per processor
•  
						

							Xserve (Late 2006) Troubleshooting — General Information 126
Hot-Pluggable SATA or SAS Drives
The server includes three hard drive bays at the front of the Xserve. All bays support hot-
pluggable Apple Serial ATA (SATA) or Serial Attached SCSI (SAS) drive modules.
Drive bays are numbered 1–3, beginning with the far left bay. The bay in which a drive is installed 
determines its master/slave position, thereby eliminating the need for jumpers or special drive 
configuration. The drive installed in bay 1 is the master drive and should have the operating 
system installed on it.
You can replace or install hard drives while the Xserve is running; you do not need to shut down 
or open the Xserve first, but you may need to dismount the drive from the Xserve OS beforehand. 
A status light on the front of each drive indicates when it is safe to remove the drive without 
losing data. For more information, see “Hard Drive Module” in the Take Apart chapter.
FB-DIMM Memory 
The server has 8 memory slots. The systems come with at least 1 gigabyte (GB) of memory 
on two fully-buffered dual inline memory modules (FB-DIMMs). To improve performance and 
capacity, you can install additional DIMMs for a total of up to 32 GB of memory. The 8 memory 
slots are labeled DIMM 1 through DIMM 8.
1234
56 78 
						

							Xserve (Late 2006) Troubleshooting — General Information 12 7
You can use the following memory in the Xserve (Late 2006):667 MHz DDR2 ECC FB-DIMMs 
• 
512 MB, 1 GB, 2 GB, or 4 GB in matching pairs (optimal, 4 or 8 identical DIMMs) 
• 
36 devices per DIMM, maximum 
• 
Error-correcting code (ECC) 
• 
Important: Apple recommends that you use Apple-approved FB-DIMMS. Other FB-DIMMs might 
degrade the performance of the Xserve. DIMMs from older Xserve systems are not compatible 
with this Xserve.
Note: Before you purchase DIMMs other than those recommended by Apple, make sure that 
the memory manufacturer conforms to the Joint Electronic Device Engineering Council (JEDEC) 
specification. Make sure that the DIMMs support the correct timing modes and that the Serial 
Presence Detect (SPD) feature has been implemented in accordance with the JEDEC specification. 
To check DIMM compatibility, see the Macintosh Products Guide on Apple’s website at www.
apple.com/guide. You can purchase Apple-approved memory online from the Apple Store at 
www.apple.com/stor e. 
						

							Xserve (Late 2006) Troubleshooting — General Information 12 8
Installation Rules
You must install DIMMs in pairs, and the DIMMs in each pair must be identical (the same 
size, speed, etc.). The first pair is installed in slots 1 and 2. Install the next pair in slots 3 and 4. 
Subsequent pairs go slots 5 and 6, and then slots 7 and 8. 
The server come s
with at least 2 DIMMs A
dd the ne xt pair
in these two slot s(Back
)
12 3456 78
(F ront )A
dd the ne xt pair
in these two slot sA
dd the ne xt pair
in these two slot s
For Best Performance
For the best performance, use identical DIMMs in all slots and fill up slots 1 through 4 before you 
install DIMMs in slots 5 through 8. If you don’t have eight identical DIMMs, install identical DIMMs 
in slots 1 through 4 and a second set of four identical DIMMs in slots 5 through 8. If you can, after 
you fill slots 1 through 4, add a full set of four DIMMs in slots 5 through 8 instead of just a pair in 
slots 5 and 6. 
Power Supply Redundancy
The Xserve supports up to two power supply modules for redundancy.  There are two power 
supply bays in the rear of the Xserve’s enclosure. You can replace or install a power supply from 
the back panel without removing the Xserve from the rack. If the Xserve has two power supplies, 
they are hot-swappable; the Xserve will continue to operate using only one supply while the 
second is removed.  For more information about removing or installing power supply modules, 
see “Power Supply” in the Take Apart chapter. 
						

							Xserve (Late 2006) Troubleshooting — General Information 129
Power Supply Status LED
The power supply status LED is located above the AC power connector on each power supply.  
This LED will illuminate either green or red to indicate status.
Power Supply Status Ligh t
If the Xserve is already running when inserting a second power supply, the status light on the 
new supply will illuminate SOLID GREEN when it’s turned on, to indicate normal operation as it 
starts sharing the load.
If the Xserve is not turned on, the supply status light BLINKS GREEN when the power cord is 
plugged in to an outlet with power, to indicate that power is available but power to internal 
components from this supply is on standby.
If the Xserve has two power supplies and no AC power is available to one of the power supplies, 
or if one of the power supplies has failed, that power supply’s status LED will illuminate SOLID 
RED.
Note: In a redundant power supply configuration, it is strongly recommended that independent 
AC mains circuits be used to connect to each power supply, if possible.  This way, if one AC mains 
circuit fails, the other AC mains circuit and power supply will continue to supply the entire Xserve 
system.
Built-in Video Display Port
Most Xserve (Late 2006) configurations have built-in video support to drive many different types 
of displays without needing to add a PCI video card. A mini-DVI display port on the rear panel 
supplies the video output. An internal video mezzanine card supplies the built-in video.  The 
video circuitry is based on an ATI RV515 graphics chipset with 64 MB of VRAM (or 256 MB of 
VRAM in a CTO configuration). 
						

							Xserve (Late 2006) Troubleshooting — General Information 130
A mini-DVI to VGA display adapter (such as the one shown above) is included with the Xserve.  
The Xserve mini-DVI display port also supports other optional Apple video adapters, such as the 
Apple mini-DVI to DVI adapter, and the Apple mini-DVI to Video adapter.
PCI-X and PCI-E Expansion Cards
The Xserve (Late 2006) has two expansion slots:
Slot 1, which accepts full-length (9 inch) PCI-E or PCI-X cards 
• 
Slot 2, which accepts half-length (6.6 inch) PCI-E cards 
• 
Expansion slot 1
(PCI-E or PCI-X) Expansion slot 2
(PCI-E)
The Xserve (Late 2006) accepts PCI cards that meet these specifications: 
Slot 1
Accepts 64-bit PCI-X 133 MHz cards (using a PCI-X riser) 
• 
Also accepts 32-bit or 64-bit 33, 66, or 100 MHz PCI or PCI-X cards with 3.3 volt universal 
• 
signaling 
Also accepts PCI-E x8 cards (using a PCI-E riser) 
• 
9 inch maximum length 
• 
25 Watt maximum power consumption 
• 
Slot 2
Accepts PCI-Express x8 cards  (using a PCI-E riser)
• 
6.6 inch maximum length 
• 
25 Watt maximum power consumption
• 
For more information, see “Expansion Cards” in the Take Apart chapter.