Just Did a Big Drive Reconfig: How Did I Verify Data Integrity?

IntegrityChecker
(part of diglloydTools)

I just made a big drive swap, getting everything onto 5TB drives in four OWC Thunderbay 4 units (originals and multiple backups).

I wasn’t about to assume that everything was intact, so I used IntegrityChecker to validate a total of about 4.5TB of data. That’s a lot of data, and I like the piece of mind of knowing that not only are my originals unchanged/intact, but that every backup clone is bit-for-bit identical as well.

Here’s the tail end of the check on my Archive volume (command line is handy for invoking/stringing together as many volume verifications as desired, as shown).

ic verify Master.cloneR10; ic verify ArchiveP.cloneR10;
    ic verify Archive.cloneR10
...
100%: 132782 files @ 243.8MB/sec, processed 2.91TB
Finished reading 132789 files of 132789
100%: 132789 files @ 243.8MB/sec, processed 2.91TB
100%: 132789 files @ 243.8MB/sec, processed 2.91TB
Processed 2.91TB in 12529.0 seconds @ 243.8MB/sec
=================================================================
ic verify Archive.cloneR10
2014-07-30 at 18:43:49
=================================================================
# Files with stored hash: 132789
# Files missing: 0
# Files hashed: 132789
# Files without hashes: 0
# Files whose size has changed: 0
# Files whose date changed: 0
# Files whose content changed (same size): 0
# Suspicious files: 0

GUI

I used the command line, but you can use the GUI wrapper if preferred:

IntegrityChecker reporting on verification results