Dell PowerEdge RAID Controller S110 - Manual (Page 61)

Appendix B 59
• Offers exceptional read performance, as well as redundancy.
• Requires only one extra physical disk to offer redundancy.
• For most systems with three or more physical disks this is the best choice
as a RAID level.
Supported RAID Levels
Table 1-1 indicates the RAID levels that are supported by the PERC S110
adapter.
Disk States - Virtual and Physical Disks
The following disk states provide information about the statuses that appear
at the PERC BIOS Configuration Utility.
Physical Disk States
• ATAPI: Indicates a peripheral device (CD-ROM, DVD, or tape drive)
instead of a physical disk. An ATAPI device cannot be initialized or added
to a virtual disk.
• Online: The physical disk has been converted to RAID Capable and is part
of a virtual disk.
• Ready: The physical disk has been converted to RAID Capable but is not
currently used in a virtual disk.
• Failed: A failed physical disk appears as Failed only when (a) View Virtual
Disk Details is selected, and (b) the virtual disk to which the physical disk
belongs is selected. The Failed status is reported only when the physical
disk is part of a virtual disk.
Table 1-1. Supported RAID Levels for the PERC S110 adapter
RAID Level Supported by PERC S110 adapter
Volume Yes (only when using the PERC Virtual Disk
Management Utility)
RAID 0 Yes
RAID 1 Yes
RAID 5 Yes
RAID 10 Yes
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