AWS Storage Gateway User Guide
Understanding Volume Status and Transitions
Understanding Cached Volume Status Transitions
Use the following state diagram to understand the most common transitions between statuses for
volumes in cached gateways. You don't need to understand the diagram in detail to use your gateway
effectively. Rather, the diagram provides detailed information if you are interested in knowing more
about how volume gateways work.
The diagram doesn't show the
Upload Buffer Not Configured
status or the
Deleting
status. Volume
states in the diagram appear as green, yellow, and red boxes. You can interpret the colors as described
following.
Color
Volume Status
Green
The gateway is operating normally. The volume
status is
Available
or eventually becomes
Available
.
Yellow
The volume has the
Pass Through
status, which
indicates there is a potential issue with the storage
volume. If this status appears because the upload
buffer space is filled, then in some cases buffer
space becomes available again. At that point, the
storage volume self-corrects to the
Available
status.
In other cases, you might have to add more upload
buffer space to your gateway to allow the storage
volume status to become
Available
. For information
on how to troubleshoot a case when upload buffer
capacity has been exceeded, see
. For information on how
to add upload buffer capacity, see
Size of Upload Buffer to Allocate (p. 221)
.
Red
The storage volume has the
Irrecoverable
status.
In this case, you should delete the volume. For
information on how to do this, see
.
In the diagram, a transition between two states is depicted with a labeled line. For example, the
transition from the
Creating
status to the
Available
status is labeled as
Create Basic Volume or Create
Volume from Snapshot
. This transition represents creating a cached volume. For more information about
creating storage volumes, see
.
API Version 2013-06-30
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