The comments came in the wake of complaints from resellers which had experienced difficulties in sourcing IBM p series machines.
Francis Toye, managing director at reseller Unilink, said: "The issue was that we had been promised a lead time of two weeks, but it actually took between five and six weeks.
"I am not blaming the distributor, but we have seen a variable supply chain, although coming to the end of the year may have been a factor," he added.
Tony Stirrup, joint UK managing director at IBM distributor Magirus, confirmed there had been a backlog, but claimed the issue had been resolved.
"A huge demand at the end of last year did cause some delays, but it is all clear now and there are no other issues," he said.
Rick Terry, general manager for enterprise storage and networking solutions at fellow distributor Avnet, said: "We are not experiencing any difficulties with the p series and have plenty in stock."