要查看是否存在任何可用的延迟更新，请运行 show 命令。如果有延迟更新可用，则您可以使用 apply 命令：
clownfish:maintenance system updates> show
Updates:
UPDATE DATE STATUS
ak-nas@2011.04.24.3.0,1-2.19.11.2 2012-6-24 17:14:19 current
ak-nas@2011.04.24.4.2,1-1.28 2012-11-5 03:11:34 waiting
ak-nas@2013.06.05.0.0,1-1.2 2013-6-19 12:58:18 unavailable
如果当前使用的软件不够新而无法升级到某个等待介质，则该等待介质列为不可用。在本例中，2011.1.4.2 和 2013.1 的介质都已下载，但是无法升级到 2013.1，因为首先需要至少升级到 2011.1.4.2。
Deferred updates:
The following incompatible updates are available. Applying these updates will
enable new software features as described below, but will prevent older
versions of the software from accessing the underlying resources. You should
apply deferred updates once you have verified that the current software update
is functioning and a rollback is not required. Applying deferred updates in a
cluster will also update any resources on the cluster peer.
1. Support for the "passthrough-x" aclinherit property for shares.
clownfish:maintenance system updates> apply
Applying deferred updates will prevent rolling back to previous versions of
software.
Are you sure? (Y/N)
clownfish:maintenance system updates> apply
