Oracle Advanced Support Gateway Installation Guide

Exit Print View

Updated: September 2014
 
 

Supported Disk Configurations

The software gateway supports systems with 1 to 6 disks. The number of disks available during installation affects the level of fault tolerance and performance that can be obtained. The table below describes the way the installer provisions storage for each of the supported disk configurations.


Note -  The installer automatically sets up a software RAID configuration if it detects more than one disk. If your system is using a hardware RAID controller, then the RAID volume should appear to the installer as a single disk device to avoid two levels of mirroring, which would negatively affect write performance.
Number of Drives
Minimum Size (Each Drive)
Disk Configuration
Fault Tolerance
Storage Capacity (s = size of each disk)
1
600 GB
All storage on a single disk
None
s
2
600 GB
RAID 1 (mirror)
Can survive a single drive failure.
s
3
600 GB
RAID 1 (mirror or disks 1 and 2) + Spare (disk 3)
Can survive two disk failures
s
4
300 GB
RAID 10 (mirror on disks 1 and 2, mirror on disks 3 and 4, striped across the 2 mirrored sets)
Can survive 1 disk failure in each mirror set. For example: this configuration can survive a failure of disks 1 or 2 and 3 or 4, but not 1 and 2 or 3 and 4.
2 x s
5
300 GB
RAID 10 (mirror on disks 1 and 2, mirror on disks 3 and 4, striped across the 2 mirrored sets) plus a spare (disk 5).
Can survive one disk failure in each mirror set and one additional failure.
2 x s
6
300 GB
RAID 10 (mirror on disks 1 and 2, mirror on disks 3 and 4, striped across the 2 mirrored sets) plus a spare (disk 5) and a dedicated backup (disk 6).
Can survive one disk failure in each mirror set and one additional failure. Backup disk can be used to recover database should an entire mirror fail.
2 x s