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6.3 Rebuild/Copyback Process Time
ETERNUS DX60 S2 Disk storage system User’s Guide -Operation-
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Copyright 2012 FUJITSU LIMITED P3AM-5512-03ENZ0
6.3 Rebuild/Copyback Process Time
This section explains the time required for Rebuild/Copyback.
■ Rebuild process time
Table 6.2 shows the time required for the rebuild process (when the volume capacity is 100GB).
Table 6.2 Rebuild process time (disk)
*1: The time required to rebuild a 100GB volume of the indicated RAID level, number and type of disks
when there is no concurrent server I/O. The time that is required depends on the type and
configuration of the disk.
■ Copyback process time
Table 6.3 shows the time required for the copyback process (when the volume capacity is
100GB).
Table 6.3 Copyback process time (disk)
*1: The time required to copyback a 100GB volume of the indicated RAID level, number and type of disks
when there is no concurrent server I/O. The time that is required depends on the type and
configuration of the disk.
RAID level No. 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
RAID level No. 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