8
Figure 9 RAID 6
Application scenarios
RAID 6 is most useful when data loss is unacceptable, but cost is also an important factor. Data loss
is less likely to occur in an array configured with RAID 6 than an array configured with RAID 5.
Advantages
•
Has a high read performance.
•
Has high data availability because any two drives can fail without loss of critical data.
•
More drive capacity is usable than with RAID 10 because parity information requires only the
storage space equivalent to two physical drives.
Disadvantages
The main disadvantage of RAID 6 is a relatively low write performance (lower than RAID 5),
because of the need for two sets of parity data.
RAID 00
As shown in
, RAID 00 is a nested RAID level combining RAID 0 and RAID 0. The
difference from RAID 0 is that member drives are replaced by member RAID 0 arrays. A RAID 00
array has extremely high storage capacity and I/O performance, but it cannot prevent data loss in
the event of disk failure. RAID 00 has no fault tolerance function.
Summary of Contents for UniServer R4300 G6
Page 36: ...21 Figure 23 Selecting the controller and RAID level 4 Select drives and then click Next...
Page 40: ...25 Figure 27 Selecting the RAID array to be deleted 2 In the dialog box that opens click Yes...
Page 66: ...24 Figure 37 Confirming RAID creation 7 Click OK to complete the RAID creation...
Page 164: ...89 Figure 158 Selecting Main Menu 2 Select Controller Management and press Enter...
Page 321: ...90 Figure 138 Configure Controller Settings screen for the RAID P460 B2...
Page 469: ...19 Examples Viewing physical drive informatoin Syntax mnv_cli info o pd Examples...
Page 513: ...7 Figure 10 Selecting Drive Management 4 Select the target drive and then press Enter...
Page 514: ...8 Figure 11 Select the target drive 5 View the value of the Status field...
Page 529: ...23 Figure 33 Identifying a storage controller 2...