ECS 3.5.0.1 Administration Guide

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Bucket HTTP headers

There are various headers that determine the behavior of ECS when creating buckets using the objects APIs.

The following x-emc headers are provided:

Table 1. Bucket headers
Header	Description
x-emc-dataservice-vpool	Determines the replication group is used to store the objects associated with this bucket. If you do not specify a replication group using the x-emc-dataservice-vpool header, ECS selects the default replication group that is associated with the namespace.
x-emc-file-system-access-enabled	Configures the bucket for NFS or HDFS access. The header must not conflict with the interface that is used. That is, a create bucket request from NFS or HDFS cannot specify x-emc-file-system-access-enabled=false.
x-emc-namespace	Specifies the namespace that is used for this bucket. If the namespace is not specified using the S3 convention of host-style or path-style request, and then it is specified using the x-emc-namespace header. If the namespace is not specified in this header, the namespace that is associated with the user is used.
x-emc-retention-period	Specifies the retention period that is applied to objects in a bucket. Each time a request is made to modify an object in a bucket, the expiration of the retention period for the object is calculated based on the retention period that is associated with the bucket.
x-emc-is-stale-allowed	Specifies whether the bucket is accessible during a temporary VDC outage in a federated configuration.
x-emc-server-side-encryption-enabled	Specifies whether objects that are written to a bucket are encrypted.
x-emc-metadata-search	Specifies one or more user or system metadata values that are used to create indexes of objects for the bucket. The indexes are used to perform object searches that are filtered based on the indexed metadata.