A 1U rack-mounted Macintosh server from Apple, introduced in 2002. Designed for the back office and datacenters, the Xserve originally came with one or two G4 PowerPC CPUs, display adapter, optical drive and up to four disk drives configured as RAID 0 or RAID 1.

Aimed at datacenter server farms, the following year brought the Xserve Cluster Node model, an Xserve without optical drive or display adapter. Also introduced was Xserve RAID, a high-capacity disk subsystem. G5-based models were introduced in 2004, and Intel-based models with Xeon chips came out in 2006. See Macintosh models. See also X server.