Flash pools: how to create a flash pool You can enable Flash Pools on new or existing aggregates in three steps. No additional license is required to create a Flash Pool. First, select a new or existing aggregate. The selected aggregate must be a 64-bit aggregate. Then turn on the hybrid_enabled option on the aggregate. Finally, add a new SSD RAID group to the aggregate. These steps convert the aggregate to a Flash Pool and activate the storage tiers. The capacity of the SSD tier is not reflected in the total aggregate size. For example, if the original aggregate has a 10-TB capacity and you add an SSD raid group with a 1-TB capacity, the amount of capacity in the aggregate that can be provisioned is still 10 TB. Module four Volumes An aggregate by itself isn't very useful, and multiple aggregates are equally boring. Things begin to get interesting when volumes are created on aggregates. A volume is a logical piece of an aggregate that contains files and directories arranged in a single file system "tree." Volumes can be resized dynamically, without the addition or removal of physical resources. Data ONTAP 7-Mode has two types of volumes: traditional and flexible. Clustered Data ONTAP has one type of volume: flexible. Flexible volumes are the same in both products Volumes are the context within which data is managed for a cluster. For example, volumes are the units of data for which Snapshot copies, mirrors, and tape backups are created. Volumes can be moved around in a cluster, and those moves are transparent to any clients that use them. Namespaces in clustered data ontap One of the key features of clustered Data ONTAP is the ability to "join" volumes together to create distributed global namespaces. If a client machine mounts or maps the "root" volume of a namespace, it can navigate to every volume in that namespace, regardless of which nodes in the cluster are hosting the volumes. Junctions The magic that joins volumes together is called a junction. A junction is conceptually like a mount point of a Unix file system. Rather than connecting one Unix partition to another, a junction connects one volume to another volume. From a client machine, the junction simply looks like a directory. Every volume in a namespace can be connected to every other volume in that namespace.
Flash pools: how to create a flash pool You can enable Flash Pools on new or existing aggregates in three steps. No additional license is required to create a Flash Pool. First, select a new or existing aggregate. The selected aggregate must be a 64-bit aggregate. Then turn on the hybrid_enabled option on the aggregate. Finally, add a new SSD RAID group to the aggregate. These steps convert the aggregate to a Flash Pool and activate the storage tiers. The capacity of the SSD tier is not reflected in the total aggregate size. For example, if the original aggregate has a 10-TB capacity and you add an SSD raid group with a 1-TB capacity, the amount of capacity in the aggregate that can be provisioned is still 10 TB. Module four Volumes An aggregate by itself isn't very useful, and multiple aggregates are equally boring. Things begin to get interesting when volumes are created on aggregates. A volume is a logical piece of an aggregate that contains files and directories arranged in a single file system "tree." Volumes can be resized dynamically, without the addition or removal of physical resources. Data ONTAP 7-Mode has two types of volumes: traditional and flexible. Clustered Data ONTAP has one type of volume: flexible. Flexible volumes are the same in both products Volumes are the context within which data is managed for a cluster. For example, volumes are the units of data for which Snapshot copies, mirrors, and tape backups are created. Volumes can be moved around in a cluster, and those moves are transparent to any clients that use them. Namespaces in clustered data ontap One of the key features of clustered Data ONTAP is the ability to "join" volumes together to create distributed global namespaces. If a client machine mounts or maps the "root" volume of a namespace, it can navigate to every volume in that namespace, regardless of which nodes in the cluster are hosting the volumes. Junctions The magic that joins volumes together is called a junction. A junction is conceptually like a mount point of a Unix file system. Rather than connecting one Unix partition to another, a junction connects one volume to another volume. From a client machine, the junction simply looks like a directory. Every volume in a namespace can be connected to every other volume in that namespace.
clustered-data-ontap-fundementals.docx