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RAID Recovery Course - Content Analysis Test
Disks from the same RAID have the same ratio of zeros and average entropy
true
false
Rows in a parity-based RAID are always even
true
false
Choose the RAID to which the ratio of zeros analysis can't be applied to
RAID created over second hand non-blank drives
Mirror
RAID created over brand-new disks
Ratio of zeros analysis is applied to
single disk
set of RAID disks
Can data recovery software detect RAID level automatically?
yes, in case of RAID5
no
yes
Check the possible RAID levels if parity analysis gives you 0% parity both for full disk set and exclusion combinations
RAID6
RAID5 with a hotspare disk
RAID5 with a missing disk
Regular RAID5
RAID0
Look at the picture and choose the possible variant
Disks {5,6,7} belong to one RAID; Disk 4 is a hotspare
Disks {4,5,6} belong to one RAID; Disk 7 is a hotspare
Disks {4,5,7} belong to one RAID; Disk 6 is a hotspare
Look at the picture on the right and guess the possible RAID level
full RAID5
RAID10
RAID 5 with a missing disk
full RAID 5 with a hotspare
If in parity analysis you see 0% parity for full disk set and 100% parity with one disk excluded, what the array level is?
certain type of RAID6
full regular RAID5
RAID5 with a missing disk
RAID5 with a hotspare disk
What does content analysis help determine?
disk order
RAID level
block size
Next lesson - Parity Analysis