LaCie 131018 - StorView Snapshot - Mac, User Manual

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Managing the Storage Solution
103
During the verification, the drive members icons in the front enclosure view of that array will display an
animated icon indicating a verification is in progress. Also, adjacent to the array name in the Main screen,
a progress bar will indicate the percent complete. When you place the mouse pointer over the progress
bar a pop-up will display the value of the percent complete.
You can stop the Verification process if you wish by clicking on the Stop link located to the right of the
progress bar.
Rewrite Parity This option reads all the data, calculates the XOR of the data, and writes
this out as the new parity. This is the fastest to complete, since it does
not have the overhead of a comparison.
Check and Rewrite Parity This option reads all the data and parity, calculates the XOR of the data,
and compares it to the parity. Then, if there is a discrepancy, it writes
this out as the new parity and creates a log entry. This is the slowest to
complete, since it has the overhead of a comparison as well as a rewrite.
Figure 10–6 Monitoring Progress of Parity Verification (RS-4835-F4-5404E Shown)
Option Description