Rebuild/Copyback Process Time; Table 14 Rebuild Process Time; Table 15 Copyback Process Time - Fujitsu ETERNUS AF250 S2 Basic Operation Manual

4. Process Time (Estimated)

Rebuild/Copyback Process Time

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.

Table 14 Rebuild Process Time

RAID level
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
*1: The value shows the rebuild process time when the volume capacity is 200GB and there is no server I/O.
The time that is required depends on the type and configuration of the drive.
■
Copyback Process Time
The following table shows the time required for the copyback process.

Table 15 Copyback Process Time

RAID level
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
*1: The value shows the copyback process time when the volume capacity is 200GB and there is no server I/O.
The time that is required depends on the type and configuration of the drive.
[Set RAID Group Parameter] specifies the rebuild priority for host access. When the Rebuild Priority is "High",
rebuild, copyback, and redundant copy performance can be improved.
Note that RAID group performance (throughput) may be reduced when a rebuild, copyback, or redundant
copy is being performed in the target RAID group.
Number of drives
2 (1D+1M)
4 (2D+2M)
5 (4D+1P)
8 ((3D+1P) ´ 2)
6 (4D+2P)
Number of drives
2 (1D+1M)
4 (2D+2M)
5 (4D+1P)
8 ((3D+1P) ´ 2)
6 (4D+2P)
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Operation Guide (Basic)
Copyright 2019 FUJITSU LIMITED
Rebuild process time (*1)
SSDs
Approx. 9 minutes/200GB
Approx. 5 minutes/200GB
Approx. 3 minutes/200GB
Approx. 2 minutes/200GB
Approx. 3 minutes/200GB
Copyback process time (*1)
SSDs
Approx. 9 minutes/200GB
Approx. 5 minutes/200GB
Approx. 3 minutes/200GB
Approx. 2 minutes/200GB
Approx. 3 minutes/200GB
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