LSI 1600 User Manual
Chapter 2 Introduction to RAID
7
Disk Striping
Disk striping writes data across multiple disk drives instead of just one disk drive. Disk striping
involves partitioning each drive storage space into stripes that can vary in size from 2 KB to 128
KB. These stripes are interleaved in a repeated sequential manner. The combined storage space is
composed of stripes from each drive. MegaRAID supports stripe sizes of 2 KB, 4 KB, 8 KB, 16
KB, 32 KB, 64 KB, or 128 KB. For example, in a four-disk system using only disk striping (as in
RAID level 0), segment 1 is written to disk 1, segment 2 is written to disk 2, and so on. Disk
striping enhances performance because multiple drives are accessed simultaneously, but disk
striping does not provide data redundancy.
involves partitioning each drive storage space into stripes that can vary in size from 2 KB to 128
KB. These stripes are interleaved in a repeated sequential manner. The combined storage space is
composed of stripes from each drive. MegaRAID supports stripe sizes of 2 KB, 4 KB, 8 KB, 16
KB, 32 KB, 64 KB, or 128 KB. For example, in a four-disk system using only disk striping (as in
RAID level 0), segment 1 is written to disk 1, segment 2 is written to disk 2, and so on. Disk
striping enhances performance because multiple drives are accessed simultaneously, but disk
striping does not provide data redundancy.
Stripe Width
Stripe width is the number of disks involved in an array where striping is implemented. For
example, a four-disk array with disk striping has a stripe width of four.
example, a four-disk array with disk striping has a stripe width of four.
Stripe Size
The stripe size is the length of the interleaved data segments that MegaRAID writes across
multiple drives. MegaRAID supports stripe sizes of 2 KB, 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or
128 KB.
multiple drives. MegaRAID supports stripe sizes of 2 KB, 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or
128 KB.