HighPoint RocketStor 6661A-mSAS1, User Manual

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Critical: OCE/ORLM Rebuild
The expanding/migrating array requires a rebuild.
Table 2: RAID Reference Level
Type Description
Min.
Disks
Usable
Space Advantage Disadvantage Application
JBOD
Just a
bunch of
disk
1 100%
Each drive can be accessed
as a single volume
No fault tolerance - failure of
one drive results in complete
data loss
Backup
RAID 0
Disk
Striping
2 100%
Offers the highest
performance
No fault tolerance - failure of
one drive results in complete
data loss Temporary file,
performance driven
application.
RAID 1
Disk
Mirroring
2 50%
Provides convenient low-
cost data redundancy for
smaller systems and servers Useable storage space is 50%
of total available capacity.
Can handle 1 disk failure.
Operating system, backup,
and transaction database.
RAID 10
Disk
Mirroring
followed by
stripe
4 50%
High read performance and
medium write performance
with data protection for up
to 2-drive failures
Useable storage capacity
equals total capacity of all
drives in the array minus two
Fast database and
application servers which
need performance and
data protection
RAID 5
Disk
Striping
with
Rotating
parity
3 67-87%
High read performance, and
medium write performance
with data protection with a
single drive failure
Not recommended for
database applications that
require frequent/heavy write
sessions. Can handle 1 disk
failure.
Data archives, and ideal
for application that require
data protection
RAID 50
Disk
Mirroring
followed by
RAID5
6 67-75%
High read performance,
and medium write
performance with data
protection in case of up to
two drives failure
Not recommended for
applications that require
frequent/heavy write
sessions.
Data archives and ideal for
application that requires
data protection
RAID 6
Disk
Striping
with dual
rotating
parity
4 50-75%
High read performance,
and medium write
performance with data
protection in case of up to
two drives failure
Not recommended for
applications that require
frequent/heavy write
sessions.
Data archives and ideal for
application that requires
data protection
HighPoint Recommended List of Hard Drives
HighPoint maintains a list of tested hard drives suitable for RAID applications. Since not every hard drive
in the market can be tested, this list is meant to be a general guideline for selecting hard drives
operating in a RAID environment. Regular, desktop grade drives are highly not recommended for RAID
use.
http://www.highpoint-
tech.com/PDF/Compatibility_List/HighPoint%20RAID%20Storage%20and%20HBA%20Hard%20Drive%20
Compatibility%20List.pdf
Contacting Technical Support
For any help and support, please submit a support ticket online at http://www.highpoint-
tech.com/websupport/