Create A Disk Partition - Spectra Logic BlackPearl User Manual

Chapter 4 - Configuring Advanced Bucket Management
3. Configure the storage pool as required for your environment. As you make changes, the
screen updates to show the characteristics of the new pool.
For this option....
Select Drives To
Use
Select Protection
Level
4. Click Create Pool. The new online disk pool is listed on the Advanced Bucket
Management screen.
C D
REATE A ISK
Disk partitions are collections of one or more storage pools, which are configured on either
44-bay, 96-bay, or 107-bay expansion nodes, connected to the BlackPearl system. Disk
partitions are specified in storage domains as storage targets.
Use the instructions in this section to create a new disk partition.
1. From the menu bar, select Configuration > Advanced Bucket Management > Storage &
Policy Management. The Advanced Bucket Management screen displays (see
page 102).
November 2020
Do the following...
Use the drop-down menu to select the number of drives to include in the
pool. If your system contains more than one type of disk drive, multiple
drop-down menus are present, but only one type can be assigned to a pool.
Any drive not in a storage pool acts as a global spare. A global spare drive is
activated as soon as a drive configured in a storage pool fails.
Use the radio buttons to select the protection level for the pool. Only one
option can be selected. Use the Storage Pool Preview information to compare
the fault tolerance and required overhead for each configuration.
None—The pool is not configured to provide data protection. Any drive
failure results in data loss.
Mirror—Data is striped across two mirrors. Any detected data corruption is
corrected using checksums. This type of RAID offers the best performance
for small random reads and writes.
Single parity—Data is striped across multiple single-parity arrays, which can
tolerate one drive failure without data loss. This type of RAID has faster
performance than double- and triple-parity based RAIDs.
Double parity—Data is striped across multiple double-parity arrays, which
can tolerate two drive failures without data loss. In most cases, double-parity
provides the best balance between data protection, performance, and storage
capacity.
Triple parity—Data is striped across multiple triple-parity arrays, which can
tolerate three drive failures without data loss. This type of RAID provides the
most data protection.
P
ARTITION
User Guide-BlackPearl Converged Storage System
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Create a Disk Partition

Figure 30 on