Fujitsu Eternus DX80 S2 - Chapter 2 Status Display; Monitoring Storage System Status

ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED P3AM-4812-11ENZ0
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Chapter 4
System Configuration
This chapter explains points to note before configuring a system using the ETERNUS DX Disk storage system.
4.1 RAID Levels
This section explains RAID group configuration and the supported RAID levels and usage (RAID level selection
criteria).
■ Supported RAID levels and mechanism
The ETERNUS DX Disk storage system supports the following RAID levels.
• RAID0 (striping)
• RAID1 (mirroring)
• RAID1+0 (striping of pairs of drives for mirroring)
• RAID5 (striping with distributed parity blocks)
• RAID5+0 (double striping with distributed parity)
• RAID6 (striping with distributed double parity blocks)
CAUTION
Do
• Remember that a RAID0 configuration is not redundant. This means that if a
RAID0 drive fails, the data will not be recoverable.
Therefore, using a RAID1, RAID1+0, RAID5, RAID5+0, or RAID6 configuration is
recommended.