Table 7 Copyback Process Time - Fujitsu ETERNUS DX S5 Series Operation Manual (Basic
Hybrid storage systems
Hide thumbs
Also See for ETERNUS DX S5 Series:
- Design manual (335 pages) ,
- Configuration manual (259 pages) ,
- Configuration manual (75 pages)
Table of Contents
3. Process Time (Estimated)
Rebuild/Copyback Process Time
■
Copyback Process Time
The following table shows the time required for the copyback process.
Table 7
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 100GB and there is no server I/O. The time that is required
depends on the type and configuration of the drive.
IMPORTANT
[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.
Copyback 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
29
Nearline SAS disks
Approx. 49 minutes/100GB
Approx. 11 minutes/100GB
Approx. 16 minutes/100GB
Approx. 11 minutes/100GB
Approx. 20 minutes/100GB
Operation Guide (Basic)
SSDs
Approx. 5
minutes/100GB
Approx. 1
minute/100GB
Approx. 2
minutes/100GB
Approx. 2
minutes/100GB
Approx. 2
minutes/100GB
Table of Contents
