The Restartable Active Directory, that allows you to have the ntds.dit in offline mode WITHOUT rebooting the domain controller.

Restartable Active Directory

Restartable Active Directory

The first three stages of the Minuteman II and III missiles used acrylic acid and aluminum powder for fuel, and ammonium perchlorate as the oxidizer. The binder, composed of polybutadiene, held the solid fuel/oxidizer mixture together.

The fourth stage, called the payload bus, was equipped with a restartable liquid-fueled engine and used the hypergolic propellants monomethyl hydrazine (fuel) and nitrogen tetroxide (oxidizer).

Yes, the "Current PSW" contains machine state and next instruction address. It is a 64 bit register, and bits 33-63 (AMODE=31) or bits 40-63 (AMODE=24) contain the address of the next instruction to be executed. Certain "restartable" instructions, while in flight, will maintain the current instruction address until the sequence is complete, and certain exceptions, "early exceptions", will contain the current instruction address but, in general, the PSW (33-63) contains the address of the next instruction to execute.