152 ©
Copyright 2017 QSAN Technology, Inc. All Right Reserved.
Figure 8-43
Enable Fast RAID Rebuild When Creating a Volume
Fast RAID Rebuild Notices
Here are some notices about Fast RAID Rebuild.
Only a thick provisioning pool supports enabling/disabling this feature, a thin
provisioning pool has included this feature and set as enabled by default.
When a rebuild occurs in a fast rebuild volume, clean partitions are not rebuilt since
there are no data saved there. Though clean partitions are never rebuilt, their health
status is good.
If all partitions of the fast rebuild volume are clean, then no rebuild would happen and no
event would be sent.
The RAID stacks could not use optimize algorithm to compute parities of a partition
which is not rebuilt. Thus, the performance of random write in a clean partition would be
worse.
CAUTION:
Disabling Fast RAID Rebuild function is recommended when the access
pattern to the volume is random write.
Summary of Contents for XCubeSAN XS5224D
Page 71: ...SANOS User Interface 49 nnnnn RPM Power Supply Local PSU n status Reset to Default Yes No...
Page 99: ...System Settings 77 Figure 6 14 System Information...
Page 315: ...Monitoring 293 Figure 13 5 Hardware Monitoring...
Page 327: ...Support and Other Resources 305 Figure 15 1 Download Service Package in the SANOS UI...
Page 331: ...Support and Other Resources 309...
