Process Time (Estimated); Volume Formatting Time; Rebuild/Copyback Process Time; Table 5 Volume Formatting Time - Fujitsu ETERNUS DX S5 Series Operation Manual (Basic

3.

Process Time (Estimated)

This chapter explains the estimated time that is required for volume formatting and for rebuild/copyback for
each RAID level configuration.

Volume Formatting Time

The following table shows the time required for the volume formatting process.
Table 5 Volume Formatting Time
RAID level
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
*1: The value shows the time required for volume formatting 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 drive.

Rebuild/Copyback Process Time

This section explains the time required for Rebuild/Copyback.
■
Rebuild Process Time
The following table shows the time required for the rebuild process.
Table 6 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 100GB and there is no server I/O. The time that is required
depends on the type and configuration of the drive.
Volume formatting time (*1)
Number of drives
SAS disks
2 (1D+1M) Approx. 40 minutes/
100GB
8 (4D+4M) Approx. 30 minutes/
100GB
5 (4D+1P) Approx. 25 minutes/
100GB
6 ((2D+1P) ´ 2)
Approx. 30 minutes/
100GB
6 (4D+2P) Approx. 40 minutes/
100GB
Rebuild process time (*1)
Number of drives
SAS disks
2 (1D+1M) Approx. 27 minutes/
100GB
8 (4D+4M) Approx. 7 minutes/
100GB
5 (4D+1P) Approx. 10 minutes/
100GB
6 ((2D+1P) ´ 2)
Approx. 7 minutes/
100GB
6 (4D+2P) Approx. 13 minutes/
100GB
Nearline SAS disks
Approx. 73 minutes/100GB
Approx. 43 minutes/100GB
Approx. 49 minutes/100GB
Approx. 43 minutes/100GB
Approx. 58 minutes/100GB
Nearline SAS disks
Approx. 47 minutes/100GB
Approx. 11 minutes/100GB
Approx. 15 minutes/100GB
Approx. 11 minutes/100GB
Approx. 21 minutes/100GB
28
SSDs
Approx. 7
minutes/100GB
Approx. 3
minutes/100GB
Approx. 3
minutes/100GB
Approx. 4
minutes/100GB
Approx. 4
minutes/100GB
SSDs
Approx. 5
minutes/100GB
Approx. 2
minutes/100GB
Approx. 2
minutes/100GB
Approx. 2
minutes/100GB
Approx. 2
minutes/100GB
Operation Guide (Basic)