AWS Snowball User Guide
V
Numbers and Symbols (p. 108) | A (p. 108) | B (p. 121) | C (p. 122) | D (p. 126) | E (p. 129) | F (p. 132) |
G (p. 133) | H (p. 134) | I (p. 135) | J (p. 137) | K (p. 137) | L (p. 138) | M (p. 139) | N (p. 141) | O (p. 142)
| P (p. 143) | Q (p. 146) | R (p. 146) | S (p. 149) | T (p. 155) | U (p. 157) | V (p. 158) | W (p. 159) | X, Y,
Z (p. 159)
validation See template validation.
value Instances of attributes (p. 115) for an item, such as cells in a spreadsheet. An
attribute might have multiple values.
Tagging resources: A specific tag (p. 155) label that acts as a descriptor within a
tag category (key). For example, you might have EC2 instance (p. 129) with the
tag key of Owner and the tag value of Jan. You can tag an AWS resource (p. 148)
with up to 10 key–value pairs. Not all AWS resources can be tagged.
Variable Envelope Return
Path
See VERP.
verification The process of confirming that you own an email address or a domain so that you
can send email from or to it.
VERP Variable Envelope Return Path. A way in which email sending applications can
match bounce (p. 122)d email with the undeliverable address that caused
the bounce by using a different return path (p. 149) for each recipient. VERP
is typically used for mailing lists. With VERP, the recipient's email address is
embedded in the address of the return path, which is where bounced email is
returned. This makes it possible to automate the processing of bounced email
without having to open the bounce messages, which may vary in content.
versioning Every object in Amazon S3 (p. 113) has a key and a version ID. Objects with the
same key, but different version IDs can be stored in the same bucket (p. 122).
Versioning is enabled at the bucket layer using PUT Bucket versioning.
VGW See virtual private gateway.
virtualization Allows multiple guest virtual machines (VM) to run on a host operating system.
Guest VMs can run on one or more levels above the host hardware, depending on
the type of virtualization.
See Also PV virtualization, HVM virtualization.
virtual private cloud See VPC.
virtual private gateway (VGW) The Amazon side of a VPN connection (p. 159) that maintains
connectivity. The internal interfaces of the virtual private gateway connect to
your VPC (p. 159) via the VPN attachment and the external interfaces connect
to the VPN connection, which leads to the customer gateway (p. 126).
visibility timeout The period of time that a message is invisible to the rest of your application after
an application component gets it from the queue. During the visibility timeout,
the component that received the message usually processes it, and then deletes
it from the queue. This prevents multiple components from processing the same
message.
volume A fixed amount of storage on an instance (p. 136). You can share volume
data between container (p. 125)s and persist the data on the container
instance (p. 125) when the containers are no longer running.
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