HP Envy 15-1002xx Notebook PC - Manual (Page 106)

C RAID 0 (select models only)
Select computer models with two solid-state drives (SSDs) ship in a RAID 0 configuration. RAID benefits
users who frequently work with large files and want to improve the storage performance of their
computer. With RAID 0, data is distributed across both drives. This allows data, especially large files,
to be read faster because data is read simultaneously from both drives. However, RAID 0 offers no fault
tolerance, which means that the entire array fails if one drive fails.
To enhance the write performance of RAID 0, Intel® Matrix Storage Manager software has implemented
a volume write-back cache. The volume write-back cache allows writes to be buffered and improves
coalescing. The cache is enabled by default, and can be disabled or reenabled in the Intel® Matrix
Storage Console. An Uninterrupted Power Supply (UPS) is recommended for use if the cache is
enabled.
96 Appendix C RAID 0 (select models only)