Apple had originally said it would start shipping the product in February, but now says it failed to reach that goal and instead hopes to ship the product this month.
"We plan to start shipping them in March 2004, a few weeks later than we originally planned," Apple said in a statement provided to CNET News.com.
The company declined to say what's to blame for the holdup, saying it had no comment beyond its statement.
The Xserve is part of Apple'sinto parts of the high-end computing world. Apple , using G4 processors, in May 2002, with company CEO Steve Jobs . The company also is working on software, dubbed Xgrid, aimed at making it easier to group its products in a cluster.
Apple said the Xserve G5 has been "very well received by our customers," but the company did not quantify the demand for the product.
Virginia Polytechnic Institute and State University has already announced it plans to use the Xserve G5 as part of an upgrade to its "X" supercomputer, also known as Big Mac. The machine, which on this year's list of top 500 supercomputers, was originally built using 1,100 Power Mac G5s. Some of those original desktops are by catalog and via online retailer MacMall.