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Oracle® ZFS Storage Appliance Customer Service Manual For ZS3-x, 7x20 Controllers, and DE2-24, Sun Disk Shelves |
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Oracle® ZFS Storage Appliance Customer Service Manual For ZS3-x, 7x20 Controllers, and DE2-24, Sun Disk Shelves |
Chapter 2 Hardware Maintenance
Managing Support Bundles Using the BUI
Generating and Uploading a Support Bundle Using the BUI
Managing Support Bundles Using the CLI
Scheduling Software Notification Using the BUI
Scheduling Software Notification Using the CLI
Checking for Updates Using the BUI
Checking for Updates Using the CLI
Troubleshooting Update Health Check Failures
Actions to Take to Resolve Health Check Alerts
Steps for Resolving Health Check Alerts
Performing the Cluster Upgrade
Applying Deferred Updates (CLI)
Triple-Parity RAID Deferred Update
Data Deduplication Deferred Update
Received Properties Deferred Update
Snapshot Deletion Deferred Update
Recursive Snapshots Deferred Update
Multiple Initiator Groups per LUN
Managing Configuration Backups Using the BUI
Restore from a Saved Configuration
Managing Configuration Backups Using the CLI
Restore from a Saved Configuration
Alert Action Execution Context
The previous resilvering algorithm repairs blocks from oldest to newest, which can degrade into a lot of small random I/O. The new resilvering algorithm uses a two-step process to sort and resilver blocks in LBA order.
The amount of improvement depends on how pool data is laid out. For example, sequentially written data on a mirrored pool shows no improvement, but randomly written data or sequentially written data on RAID-Z improves significantly - typically reducing time by 25 to 50 percent.
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