Chapter 3 - Understanding Spectra Advanced Bucket Management Concepts
Example Configurations
Parameter
Value
Description
Write
Optimization
Capacity
Job chunks are written across as few pieces of media as
possible. Fewer tape drives are used, so performance is
lower.
LTFS File Naming
Object ID
File names use the format {
bucket name
}/{
object id
}, for
example, bucket1/1fc6f09c-dd72-41ea-8043-
0491ab8a6d82.
Media Ejection
Allowed
cleared
Media ejection is not allowed.
Storage Domain Member for Tape First Copy -
The first tape partition created on the tape library
and detected by the system.
Tape Type
varies
The tape type matching the latest generation of tape
drive in the partition.
Write Preference
Normal
The system uses the partition after partitions with
High
write preference and before a partition with
Low
or
Never Select
write preference.
Auto Compaction
Threshold
20
The percentage of a tape with deleted objects at which
auto compaction is triggered. The default is 95. The
minimum is 10.
Data Policy - Single Copy on Tape
Blobbing Enabled
selected
Allows an object to be broken into multiple blobs.
Minimize
Spanning
cleared
Jobs larger than 1 TB are allowed to span across
multiple tapes or pools as needed to maximize capacity
utilization and performance.
Default GET Job
Priority
High
When the storage domain receives a GET job, it is
processed with high priority, which is before low and
normal priority jobs. Jobs of different types are put in
order based on priority.
Note:
When using a Spectra S3 client, this setting can
be overridden when sending a GET job by specifying a
different priority in the Get Job command. See the
Spectra BlackPearl Spectra S3 API Reference
for more
information.
November 2020
User Guide-BlackPearl Converged Storage System
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