Owner's Manual

LSI SAS RAID ▍
MS-96E0
B-17
LSI SAS RAID ▍
MS-96E0
4�3 IS Description
The IS feature writes data across multiple disks instead of onto one disk.
This is accomplished by partitioning each disk’s storage space into 64 Kbyte stripes.
These stripes are interleaved round-robin, so that the combined storage space is com
-
posed alternately of stripes from each disk.
For example, as shown in Figure 4.1, segment 1 is written to disk 1, segment 2 is written
to disk 2, segment 3 is written to disk 3, and so on. When the system reaches the end of
the disk list, it continues writing data at the next available segment of disk 1.
Figure 4.2 shows a logical view and a physical view of Integrated Striping congura-
tion.
The primary advantage of IS is speed, because it transfers data to or from multiple
disks at once. However, there is no data redundancy; therefore, if one disk fails, that
data is lost.