Administrator Guide

Callout Description
A point-in-time copy of data from a volume or container. Snapshots can be created manually or automatically on a
schedule.
10 Thin-provisioned volume (oine)
Thin provisioning allocates space based on how much is actually used, but gives the impression the entire volume
size is available. (For example, a volume with 100GB storage can be allocated to use only 20GB, while the rest is
available for other uses within the storage pool.) An oine volume indicates that it can no longer be accessed by the
iSCSI initiator until it has been set online.
For each volume, the group generates an iSCSI target name, which you cannot modify. An iSCSI target name includes a prex, a string, and
the volume name. Initiators use the target name to connect to a volume. For example:
iqn.2001-05.com.equallogic:7-8b0900-6d0000000-001ebbc5d80sf0k0-db3
where:
prex: iqn.2001-05.com.equallogic
string: 7-8b0900-6d0000000-001ebbc5d80sf0k0
volume name: db3
Each volume appears on the network as an iSCSI target. Hosts with iSCSI initiators use the volume's target name to connect to the
volume.
Each iSCSI volume supports a set of features and capabilities:
• Snapshots — To protect volume data from mistakes, viruses, or database corruption, you can use snapshots.
• Replication — To protect against disasters, you can replicate volume data from one group to another.
• Thin Provisioning — To manage storage capacity utilization on demand, you can use thin provisioning.
• Clones — To create a master or boot image, full system backup, or transfer a system to another person, you can use cloning.
• Volume Undelete — To restore mistakenly deleted volumes, you might be able to use volume undelete.
NOTE
: The system permanently deletes volumes after 7 days, and sometimes sooner.
• Volume Folders — To organize volumes into folders for quick visual reference, you can use volume folders.
• Control Access to iSCSI Initiators — To protect your volumes from unauthorized and uncoordinated access by iSCSI initiators, you can
use access control policies.
• Control Access to Hosts (servers) — To prevent inadvertent corruption of the volume caused by multiple hosts writing to it in an
uncoordinated manner, enable multihost access to a volume.
Create a Volume
Create a volume to present a local unit of storage on a PS Series group.
1 Click the Storage view.
2 In the Storage pane, select a PS Series group.
3 Click the Storage tab.
4 In the Storage tab navigation pane, select Volumes.
5 In the right pane, click Create Volume. The Create Volume dialog box opens.
6 In the Name eld, type a name for the volume.
7 In the Volume Folder pane, select the Volumes node or a parent folder for the volume.
8 In the Notes eld, type any notes to associate with this volume.
9 In the Size eld, type a size for the volume in megabytes (MB), gigabytes (GB), or terabytes (TB).
10 (Optional) Congure the remaining volume attributes as needed.
PS Series Storage Array Administration
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