Chapter 6 First-Time Configuration 6-15
6.1.8.1 Sun StorEdge 3510 FC Array Default Configurations
For a 12-drive array, the RAID array is preconfigured as follows:
■ Two RAID 5 logical drives, consisting of five physical drives each
■ Two global spares
For a 5-drive array, the RAID array is preconfigured as follows:
■ One RAID 5 logical drive, consisting of four physical drives
■ One global spare
6.1.8.2 Sun StorEdge 3511 FC Array Default Configurations
For a 12-drive array, the RAID array is preconfigured as follows:
■ Two NRAID logical drives consisting of one physical drive each
■ No global spares
For a 5-drive array, the RAID array is preconfigured as follows:
■ One NRAID logical drive consisting of one physical drive
■ No global spares
NRAID is a collection of physical disk members into a logical drive, allowing the
firmware application, Sun StorEdge Configuration Service or the Sun StorEdge CLI
to connect in-band. Once connected, these applications can be used to set the system
IP address and create the initial RAID configuration.
Caution – NRAID is not a redundant RAID option. If a disk fails in an NRAID
configuration, all data will be lost.
The following table highlights the RAID levels available.
TABLE 6-6 RAID Level Definitions
RAID Level Description
NRAID NRAID stands for Non-RAID. It is only used as a default configuration for
the Sun StorEdge 3511 FC array. NRAID does not provide data redundancy
and is not recommended.
RAID 0 Striping without data redundancy; provides maximum performance.
RAID 1 Mirrored or duplexed disks. For each disk in the system, a duplicate disk is
maintained for data redundancy. RAID 1 requires 50% of total disk capacity
for overhead.
RAID 3 Striping with dedicated parity. One drive is dedicated to parity. Data is
divided into blocks and striped across the remaining drives.
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