Though Knicks president Phil Jackson took a hatchet to last season’s roster and coaching staff, the Zen Master went status quo with the basketball operations department.

Jackson added former Bulls scout Clarence Gaines Jr. as a key advisor, but made no important firings or other additions.

According to a source, Jackson decided to keep the front office intact for at least this season.
For the last two days at practice in Tarrytown, the sidelines were packed with Jackson’s entire new-old staff, which essentially is former general manager Glen Grunwald’s staff — save for general manager Steve Mills.

In addition to agreeing last March to keep Mills as his right-hand man — upon owner James Dolan’ s recommendation — Jackson retained veteran executive John Gabriel, promoted from director of pro scouting to director of basketball operations, and gave him more influence. Player personnel director Mark Warkentien, meanwhile, lost some power. He interviewed in Memphis for a front-office position that ultimately went to former Nets president Ed Stefanski.

Losing clout, too, is Allan Houston, the assistant GM who now is mostly in charge of revving up the new D-League team in Westchester.