50
•
RAID 50
–
Striping of Distributed Parity
•
RAID 6
–
Double Parity Bit
Each RAID level has its pros and cons based on the application you use it for (Note:
Refer to RAID level Quick Reference)
Array Name:
the name that will be displayed in Logical Device Information (
Default
:
RAID_<level>_<array number>)
Initialization Method:
•
Keep Old Data
: Opts to keep all the data on each drive untouched. Best for users
that already have HighPoint RAID data on the selected drives.
•
Quick Init
: Grants immediate access to the array volume. This option will delete
previous user data, but will not build parity. Recommended for testing purposes
only or when new disks are used.
Not recommended
for RAID 5, RAID 50, and
RAID 6.
•
Foreground
: The array initialization process will be set at high priority. During
this time array will be
non-accessible
, but initialization completion time will be
shorter.
•
Background
: The array initialization process will have a lower priority. During
this time array will be
accessible
, but initialization completion time will be
longer.
Note
1: Initialization takes a significant amount of time (approximately 2 hours per 1
TB).
Cache Policy (Default: Write Back)
Write Back
–
Any data written to the array will be stored as cache, resulting in better
I/O performance at the risk of data failures due to power outages. Data will be stored as
cache before it is physically written to the disk; when a power outage occurs, any data
in the cache will be lost.
Write Through
–
Data written to an array is directly written onto the disk, meaning
lower write performance for higher data availability. Without cache acting as a buffer,
write performance will be noticeably slower but data loss due to power outages or other
failures is significantly minimized.