Stasis pod

Stasis pods are devices used to hold a being in stasis. They are used by many races, which vary from by each race.

Ancient
The Ancients have stasis pods in which do not cause complete stasis, but rather slow down the metabolic rate of the individual in the pod. They will still age, but at a significantly slower rate. Elizabeth Weir went into stasis to preserve Atlantis by rotating the Zero Point Modules every 3,300 years. Jack O'Neill was placed in a smilar stasis pod in the Antarctic outpost to prevent his brain from being overwhelmed by the knowledge of the Ancients.

Asgard
The Asgard have also developed two types of stasis pods: one to hold a being of their size, and another to hold a being of human size. Asgard size stasis pods are capable of sustaining an Asgard in perfect hibernation, and the pod is capable of surviving in the vacuum of space. They are also equipped with locator devices which appear to be able to span galaxies, as Thor's pod was able to send a signal which reached Ida while he was still in the Milky Way.

Wraith
The Wraith will spend roughly two centuries in stasis between cullings, during which the humans of Pegasus will repopulate their galaxies. Whether the stasis is solely to allow human population growth or is a biological need is unknown. While in stasis, they will not be detected by a life signs detector. Because of the vulnerability the Wraith place themselves in by sleeping, a small group lead by a Keeper will guard them. If the Keeper should die, the rest of the hive will awaken. The Wraith also use stasis technology to keep humans alive to be fed upon in the future, by cocooning them.