Fujitsu Eternus DX500 S3 - Rebuild;Copyback Process Time; Table 4.2 Rebuild Process Time (Disk); Table 4.3 Copyback Process Time (Disk)

4.2 Rebuild/Copyback Process Time
This section explains the time required for Rebuild/Copyback.
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Rebuild Process Time
The following table shows the time required for the rebuild process (when the volume capacity is 100GB).
Table 4.2 Rebuild Process Time (Disk)
RAID level
Number of disks
Rebuild process time (*1)
2.5" SAS disks 3.5" SAS disks Nearline SAS disks
RAID1 2 Approx. 27 minutes/
100GB
Approx. 20 minutes/
100GB
Approx. 47 minutes/
100GB
RAID1+0 8 Approx. 7 minutes/
100GB
Approx. 5 minutes/
100GB
Approx. 11 minutes/
100GB
RAID5 5 Approx. 10 minutes/
100GB
Approx. 10 minutes/
100GB
Approx. 15 minutes/
100GB
RAID5+0 6 Approx. 7 minutes/
100GB
Approx. 7 minutes/
100GB
Approx. 11 minutes/
100GB
RAID6 6 Approx. 13 minutes/
100GB
Approx. 13 minutes/
100GB
Approx. 21 minutes/
100GB
*1: The value shows the rebuild process time when the volume capacity is 100GB and there is no server I/O.
The time that is required depends on the type and configuration of the disk.
■
Copyback Process Time
The following table shows the time required for the copyback process (when the volume capacity is 100GB).
Table 4.3 Copyback Process Time (Disk)
RAID level
Number of disks
Copyback process time (*1)
2.5" SAS disks 3.5" SAS disks Nearline SAS disks
RAID1 2 Approx. 27 minutes/
100GB
Approx. 20 minutes/
100GB
Approx. 49 minutes/
100GB
RAID1+0 8 Approx. 7 minutes/
100GB
Approx. 5 minutes/
100GB
Approx. 11 minutes/
100GB
RAID5 5 Approx. 10 minutes/
100GB
Approx. 7 minutes/
100GB
Approx. 16 minutes/
100GB
RAID5+0 6 Approx. 7 minutes/
100GB
Approx. 5 minutes/
100GB
Approx. 11 minutes/
100GB
RAID6 6 Approx. 13 minutes/
100GB
Approx. 13 minutes/
100GB
Approx. 20 minutes/
100GB
*1: The value shows the copyback process time when the volume capacity is 100GB and there is no server
I/O. The time that is required depends on the type and configuration of the disk.
Chapter 4 Process Time (Estimated)
4.2 Rebuild/Copyback Process Time
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FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Disk storage system Operation Guide (Basic)
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