VH Apple Drive Module

Xserve (Late 2006) includes three hard drive bays on the front panel. Hard drives come as modules, known as Apple drive modules (ADMs), attached to carriers; they are removed from or installed in the Xserve as a unit. ADMs have been available from Apple in various capacities for all Xserve and Xserve RAID models, and in multiple interface types. Xserve G4 and Xserve RAID use parallel ATA (PATA) ADMs, and Xserve G5 uses serial ATA (SATA) ADMs. Xserve (Late 2006) can use SATA ADMs, and ADMs with a new, third interface type known as serial attached SCSI (SAS). It is important to understand ADM forward compatibility and backward compatibility with older Xserve models, since some combinations of ADM and Xserve or RAID work properly while other combinations do not. The following table summarizes this compatibility.

Xserve G4

Xserve RAID

Xserve G5

Xserve (Late 2006)

PATA ADM for Xserve G4

OK

OK

NO*

NO*

SATA ADM for Xserve G5

NO*

NO*

OK

OK (but not supported)

SATA ADM for Xserve (Late 2006)

NO*

NO*

OK (but not supported)

OK

SAS ADM for Xserve (Late 2006)

NOt

NOt

NOtt

OK

* PATA connector is physically different from SATA connector so this ADM will not fit completely into slot.

t PATA connector is physically different from SAS connector so this ADM will not fit completely into slot.

tt Will fit completely into slot but ADM will not work or be recognized by the Xserve. Installing the SAS ADM should not damage the drive, however.

Note: Blank drive carriers, which may fill some of the hard drive bays, follow the same take-apart procedure as hard drives. If you are replacing a blank carrier with a drive module, instruct the Xserve's administrator to keep the blank for possible future use. Blank carriers must be installed in all empty bays to maintain proper airflow through the Xserve.

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