Scalr\Model\Entity\Server::suspend PHP Method

    public function suspend($user = null)
    {
        if ($this->status != Server::STATUS_RUNNING) {
            return false;
        }
        if ($user instanceof User) {
            $properties = $this->properties;
            $properties[self::TERMINATED_BY_ID] = $user->getId();
            $properties[self::TERMINATED_BY_EMAIL] = $user->getEmail();
            $properties->save();
        }
        $this->update(['status' => Server::STATUS_PENDING_SUSPEND, 'shutdownScheduled' => new DateTime(Scalr::config('scalr.system.server_terminate_timeout'))]);
        if (isset($this->farmId)) {
            $DBServer = $this->__getDBServer();
            Scalr::FireEvent($this->farmId, new BeforeHostTerminateEvent($DBServer, true));
        }
        return true;
    }