HP LeftHand Storage, User Manual, Page: 157 / 282

Table 48 Characteristics for new volumes (continued)
What it means Configurable for Primary
or Remote Volume Volume characteristic
The default value = Network RAID-10. For information about
the data protection levels, see
“Planning data protection”
(page 142) .
Both Type •
Primary volumes are used for data storage.
•
Remote volumes are used for configuring Remote Copy
for business continuance, backup and recovery, or data
mining/migration.
Default value = Primary
Primary Provisioning •
Fully provisioned volumes are the same size on the SAN
as the size presented to the application server.
•
Thinly provisioned volumes have less space reserved on
the SAN than the size presented to the application server.
As data is stored on the volume, the SAN/iQ operating
system software automatically increases the amount of
space allocated on the SAN.
The default value = Full for the following data protection
levels.
•
Network RAID-0 (None)
•
Network RAID-10 (2–Way Mirror)
•
Network RAID-10+1 (3–Way Mirror)
•
Network RAID-10+2 (4–Way Mirror)
The default value = Thin for the following data protection
levels.
•
Network RAID-5 (Single Parity)
•
Network RAID-6 (Dual Parity)
Thin provisioning is the best practice configuration for
Network RAID-5 and Network RAID-6 volumes.
NOTE: The SAN/iQ operating system software allocates
space as needed. However, thin provisioning carries the risk
that, if all warnings are ignored, an application server will
fail a write because the SAN has run out of disk space.
Creating a volume
A volume resides on the storage systems contained in a cluster. You can easily create a basic
volume, or customize the Advanced settings. Both options are described in the following steps.
1. Log in to the management group in which you want to create a volume.
2. In the navigation window, select the cluster in which you want to create a volume.
3. Click Cluster Tasks , and select New Volume .
The basic volume
You can create a basic volume simply by entering a name and a size for the volume.
1. Enter a name for the volume.
2. [Optional] Enter a description of the volume.
3. Designate a size for the volume.
Creating a volume 157