Chapter 4 - Configuring Advanced Bucket Management
Create a Data Policy
6.
Select the
Performance
characteristics for the data policy. Each priority determines the
resources assigned and the processing order. Jobs with priority
Urgent
can use up all of
the resources and prevent other jobs from making progress. Use this priority sparingly.
a.
Use the drop-down menu to select the
Default GET Priority
.
b.
Use the drop-down menu to select the
Default PUT Priority
.
c.
Use the drop-down menu to select the
Default VERIFY Priority
.
d.
Select or clear
Default Verify After Write
. Clients may specify whether or not to verify
data immediately after writes when creating a PUT job. If the client does not specify a
policy for verification of data after writes, this selection determines whether a verify
is done. If done, the verification uses the checksum type specified in
below.
Notes:
• After the PUT job completes, the tape remains in the drive during data
verification.
• Only the data just written by the PUT job is verified.
• This verification does not update the
Last Verified
field on the tape details
screen.
• Selecting
Default Verify After Write
reduces system write throughput by up to
50%.
• This setting does not apply to replication targets.
e.
Use the drop-down menu to select the
Rebuild Priority
.
7.
Select the
Data Security
options for the data policy.
a.
Use the drop-down menu to select the
Checksum type
. This setting specifies the type
of checksum used to verify data integrity for data in any bucket using this data
policy, and the type of checksum required for end-to-end CRC, if specified.
Notes:
• CRC, MD5, and SHA-512 perform the best for their corresponding
cryptographic strengths on the BlackPearl system.
• Using SHA-256 and SHA-512 reduces single stream performance and may
reduce throughput capabilities of the system.
b.
If you want to enable end-to-end security for each GET or PUT job, select the
Require
end-to-end CRC
check box.
November 2020
User Guide-BlackPearl Converged Storage System
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