||Data striping without redundancy. Single disk failure destroys the array. High performance.
||Not recommended since it is not fault tolerant
||Mirroring. Provides better read performance than a single disk. Is fault tolerant.
||Recommended for a single slice
||Hybrid (or nested) RAID that is a stripe of mirrors (a RAID 0 of RAID 1). Performance
is high for reads and writes. Is fault tolerant, as long as a mirror does not lose
all its disks.
||Recommended for two index slices
||Offers a slightly better performance but is slightly less fault tolerant than RAID
||Data striping with block level parity. Requires all drives but one to operate. Drive
failure requires replacement. Read performance is adequate, but write performance
is too low to be used in an indexing context.
|| Not recommended
||A set of mirrors, one for each slice, when two slices are needed. Write and read
performances are better because of the way CES evenly splits I/O operations between
the RAID arrays. Basically, CES does the load-balancing instead of the controller.
More complex configuration.
||Recommended to achieve better performances with the same number of drives