System Disks - Fujitsu Eternus2000 Manual

1.2 Configuration
•
• No more than 8TB can be used for any one volume. However, the maximum allowed vol-
1.2.3

System Disks

System disks are disk drives which have part of their area (the system area) assigned for use by the firm-
ware.
System
User
System Disk
Figure 1.8
Two system disks are installed in Slot0 and Slot1 in the controller enclosure.
The location of system disks can be confirmed by the setting/maintenance program.
IMPORTANT
10
Table 1.5 shows the time for volume formatting.
Table 1.5 Volume formatting time
RAID level No. of disk drives
RAID1 2
RAID1+0 8
RAID5 5
RAID6 6
*1: The value shows the time required for volume formatting when there is no server I/O. The time depends
on the disk drive configuration or the disk type.
*2: 15,000rpm
ume capacity is OS dependent.
User
User Disk
System disk and user disk
System disks cannot be registered as hot spare disks because their
user capacity is smaller than other disk drives (user disks).
Copyright 2009 FUJITSU LIMITED
Time required for volume formatting (*1)
SAS disk drives (*2)
Approx. 30 minutes/100GB
Approx. 20 minutes/100GB
Approx. 20 minutes/100GB
Approx. 25 minutes/100GB
ETERNUS2000 disk storage system User Guide
Nearline SAS disk drives
Approx. 85 minutes/100GB
Approx. 50 minutes/100GB
Approx. 50 minutes/100GB
Approx. 70 minutes/100GB
P3AM-2512-03EN