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1answer
17 views

Transactions per second in a database (say PostgreSQL)

I refer to 2 documentation pages on PostgreSQL's site: #1 and #2. From these, we see the transaction log is flushed to disk 5 times per second (wal_writer_delay = 200ms), and we also see the RDBMS ...
0
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2answers
28 views

File integrity checking

I have a lot of PDFs and many of them may be corrupt. Rather than checking each one, how could I check them all at once and delete any that are corrupt? Using Linux. I also don't have a way to get ...
0
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0answers
217 views

Cheaper alternative to ZFS Storage for a home NAS

I'm looking to build a NAS for home use with 8-10*(2-4TB) drives, out of which 2-3 drives would be used for parity via software RAID. In the past years and up to date, ZFS seems to have become the ...
0
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0answers
22 views

Does Zimbra guarantee data integrity?

I'm using Zimbra (v 7.1.4) via the web interface. Recently I tried to move a large number of messages from one folder to another. The web interface reported on the progress of the operation, in steps ...
2
votes
1answer
76 views

How to make GNU/Linux more robust in case of frequent power loss

When having a system (hardware), that has no protection against sudden power loss (zero power at all), what is the best way to keep the damage that may occur to a running GNU/Linux as low as possible? ...
8
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1answer
194 views

Is ECC mandatory in SSD technology?

While shopping for an SSD I have noticed that some manufacturers promote their "Pro" models as the ones sporting ECC data protection. Those manufacturers do not mention ECC in their budget models ...
0
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4answers
354 views

Check if a file has been changed

I have the following scenario: A certain process (A) creates files and I want to write a program which reads these files to generate some statistical data. The problem is simple. I want to be sure ...
3
votes
1answer
124 views

Does flash-memory integrity depend on system resources while reading/writing (like CDs/DVDs)?

Question I’m really concerned that flash-memory is just not reliable as a storage for irreplaceable files. Does anybody know if the integrity (corruptibility) of flash-memory (flash-drives, ...
6
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1answer
3k views

How do I fix “WARNING: message was not integrity protected” when using GPG symmetrical encryption?

I've encrypted a file using symmetric encryption like this: gpg --symmetric myfile which results in a file myfile.gpg. Alright. Now let's decrypt the file again: gpg -o myfile --decrypt ...
0
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0answers
46 views

rsync Not Reporting Changes in Log File

I'm seeing some strange behavior from rsync. Here's what I did: Copied a remote directory to a local backup Changed a file on the remote server Ran rsync again with the --dry-run option on to see if ...
0
votes
2answers
112 views

Error proofing data

Is it possible to encode data is such a way that it can self-recover from corruptions? (corruptions - for example, hard drive or usb drive with bad sectors) I'm not looking for solutions involving ...
5
votes
1answer
484 views

Does Windows calculate CRCs to check every file operation?

When Windows encounters a file corruption on a file system, it may return the following error message: Data error (cyclic redundancy check). This suggests Windows checks every file operation ...
2
votes
1answer
254 views

Used HDD/ran DiskSmartView/40,000 Power-on-hours?? should i trust it w/ my data, or take it back and bitch? [closed]

I just bought a used hard drive from a University Surplus Store. Decided to run DiskSmartView to make sure it wasn't ready to fail. 40,000 power-on-hours I don't know if I feel like trusting my ...
0
votes
1answer
179 views

Is there any chance that my data will get silently corrupted with a robocopy SMB network transfer?

I'm setting up a NAS box for the first time. At the moment, I have most of my data backed up to a few local hard drives, and I intend to transfer all the data to my NAS over ethernet once the RAID ...
2
votes
1answer
467 views

How can I detect (and correct) silent data corruption?

My question is, how can I detect silent data corruption at my home PC (Windows + Linux). I do rsync like automatic backups (with version history). But how do I know in a few months/years that a long ...
20
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5answers
882 views

How to transfer a file over pen and paper, with error correction

I'm looking for a way to transfer a file using only a pen and paper. This is somewhat similar to paperbak, except the density I'm looking for is much, much lower, and I don't want to use a printer or ...
1
vote
1answer
333 views

How to copy files from HDD to HDD with integrity checking

I am moving data from an almost dead HDD to an external USB drive using linux , because for some reason Windows cannot see the data. I want to copy a large amount of data over from the HDD to the USB ...
1
vote
1answer
218 views

Finder Error -36 with Console I/O Error - potential causes?

I'm copying a lot of data between two hard drives. The first one (the source) was getting a lot of repetitive Finder Error -36 codes. Scanning the Console this is linked to an I/O Error coming from ...
3
votes
1answer
3k views

How can I check my audio files for integrity?

I've found that audio files seem to degrade slightly over time (10 years +), and I'm looking for a tool to check the integrity of those, and say, "yip, it's all there and good!". I need something ...
5
votes
1answer
283 views

Is it safe to edit files during the defragmentation process?

Assuming I'm on an NTFS partition, is it just as safe to edit files during defragmentation as when not? Is there any added risk, even if very small? If not, how does the operating system ensure the ...
2
votes
1answer
3k views

High “wasted” on a torrent download, with no hashfails

Recently I have downloaded a game patch from a torrent. The total patch size was ~528 MB and the torrent has shown 235 MB as "wasted", with 0 hashfails. Some other things I remember about the ...
1
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2answers
1k views

Need Program To Verify Video Files Integrity [duplicate]

I have a ton of video files that were downloaded from the internet. Most are ok, but some were not completely downloaded. Is there a program that will tell me if a video file is complete? Either a ...
1
vote
1answer
178 views

How can I ensure the correctness of a .tar.gz file I recently downloaded from a server?

How can I ensure the correctness of a .tar.gz file I recently downloaded from a server?
2
votes
2answers
7k views

How can I verify the read/write integrity of a compact flash device?

I've got a bunch of compact flash cards that I've used heavily in a professional photo and video capacity. I'm concerned that one of them is going bad, since I am seeing files (most often video, but ...
1
vote
2answers
72 views

Changing filesystem types “safely”

Back in Windows 95 OSR2 (I believe), there was a conversion tool that would take your extant FAT16 partition and change it to FAT32 non-destructively (most of the time). Are there any tools like that ...
1
vote
2answers
78 views

Data Archiving vs not

For the sake of data integrity, is it wiser to archive your files or just leave them unarchived. No compression is being used. My thinking is that if you leave your files unarchived, if there is ...
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4answers
3k views

How can I copy a folder with many files with integrity check?

I just got a new hard drive and want to move many of the folders from the old hard drive to the new one, but I want to make sure everything is copied over correctly. I tried using md5summer to ...