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ESS Series
User’s Manual
92
RAID
Level
Note
Min Disk
Needed
form the RAID60 as the RAID0 mode. It has the read/write speed of
the RAID0 and can guarantee the redundant feature of the RAID6.
RAID60 can max support two malfunction HDDs in each sub-RAID6.
It can use the data on other HDDs to restore the data.
JBOD
It is an abbreviation for Just a Bunch Of Disks. It refers to
an array of
drives
,
each of which is accessed directly as
an independent
drive.
2
6.3
RAID Capacity Calculation
RAID Name
Total Space of the N disks.
RAID60
(
N-2*span
)
× min(capacityN)
RAID50
(
N-span
)
× min(capacityN)
RAID10
(
N/2
)
× min(capacityN)
RAID6
(
N-2
)
× min(capacityN)
RAID5
(
N-1
)
× min(capacityN)
RAID3
(
N-1
)
× min(capacityN)
RAID1
min(capacityN)
RAID0
The total amount of N*disk=disk space *disk amount.
Note
capacityN refers to the disk of mini space among all the member disks. Please refer to the
WEB for detailed space information.
Span means how many RAID5 to compose RAID50, or how many RAID6 to compose
RAID60.