EMPTY
XOR PARITÄT
2TB
2TB
2TB
4TB
2TB
2TB
2TB
XOR PARITÄT
2TB
6TB
STRIPING
2TB
2TB
2TB
2TB
MIRRORING
4TB
MIRRORING
EN - 18/38
RAID 3
Striped set
with dedicated parity
RAID 5
Striped set
with distributed parity
RAID 10
Mir
Striping
This mechanism provides an improved performance and fault tolerance similar to
RAID 5 but with a dedicated parity disk rather than rotated parity stripes.
The single parity disk is a bottle-neck for writing since every write requires updating the
parity data. One minor benefit is the dedicated parity disk allows the parity drive to
fail and operation will continue without parity or performance penalty.
Distributed parity requires all drives but one to be present to operate; drive failure
requires replacement, but the array is not destroyed by a single drive failure.
Upon drive failure, any subsequent reads can be calculated from the distributed parity
such that the drive failure is masked from the end user. The array will have data
loss in the event of a second drive failure and is vulnerable until the data that was
on the failed drive is rebuilt onto a replacement drive.
RAID 10 is mirrored(Raid 1) sets in a striped(Raid 0) set .
Summary of Contents for QB-35US3R+AES
Page 1: ...Model QB 35US3R AES 4 BAY RAID ENCLOSURE English ...
Page 3: ...DE 01 38 DIAGRAM of FANTEC QB 35US3R AES FRONT PANEL OVERVIEW EN 01 38 ...
Page 18: ...EN 16 38 RAID mode confirmation button ...
Page 28: ...EN 26 38 3 Disk format completed 2 Create new partition and format disk ...
Page 30: ...EN 28 38 2 Create new partition and format disk 3 Disk format completed ...
Page 33: ...DE 31 38 2 Create new partition and format disk 3 HDD format completed EN 31 38 ...
Page 34: ...EN 32 38 Macintosh O S 10 X 1 Click Disk Utility icon 2 HDD initialize ...
Page 35: ...EN 33 38 4 Click Erase 3 Click Erase ...
Page 36: ...5 HDD format in process 6 Format completed EN 34 38 ...