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0answers
14 views

Verify rdiff backup integrity

I am using rdiff for my differential backup. Recently an issue happened where all versions of my backup failed to patch correctly and rdiff returning an error 106 which after investigation is a code ...
3
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1answer
110 views

What is a safe way to back up a sparsebundle that is exported via afpd?

I work with a number of OSX client machines that back up via TimeMachine to AFP shares on an Ubuntu Linux file server, exported by netatalk/afpd. These clients back up at arbitrary times of the day, ...
-1
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1answer
58 views

Does RAID1 also checks for corruption? [closed]

I have two 1.5 TB disks, and I don't trust both of them because of weird noises and bad clusters. I was wondering if I put them in a software RAID1 array (mirrored volume in Win7) it will write my ...
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3answers
867 views

Which SSD to choose, when unexpected powerlosses are frequent?

I am working on a embedded system where there can be unexpected power losses. So far it has been using a Corsair F80 SSD with Windows Embedded Standard 7 (NTFS), and after a unexpected power loss ...
5
votes
1answer
2k views

How to get checksum data integrity on ext4?

On file systems like btrfs you can preform a scrub, which will go though all the data to see if the data still matches the file system checksum. I would like to check the data on ext4 if it is ...
2
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2answers
124 views

Single file changed: intrusion or corruption?

rkhunter reported a single file change on a virtual server (netstat binary). It didn't report any other warning. The change was not the result of a package upgrade (I reinstalled it and the checksum ...
1
vote
1answer
994 views

DB2 Integrity Checks and Exception Tables

I am working on planning a migration of a DB2 8.1 database from a horrible IBM encoding to UTF-8 to support further languages etc. I am encountering an issue that I am stuck on. A few notes on this ...
3
votes
2answers
305 views

Detecting data corruption so we're not backing up corrupt files

I've been thinking about data integrity, I currently backup about 2tb of data and always have one backup of data from a year ago. My concern is if a file became corrupt on our production file server ...
0
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1answer
526 views

Best practices for mass file transfer with verification?

I'm looking for a bit of advice on transferring a several files from Windows-based workstations to a Linux Server running Ubuntu Server LTS 10.04. At the moment I've been mounting the shares on the ...
1
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3answers
677 views

Best practices for backing up Windows workstations to Linux server?

I was wondering what strategies others in the community use when backing up their Windows-based workstations to Linux servers. At the moment I'm doing a bit of a test with Ubuntu Server LTS 10.04 and ...
2
votes
2answers
552 views

What happens to InnoDB and MyISAM tables if the power fails during a transaction?

We have two MySQL tables, one is InnoDB and the other is MyISAM. If I execute a chunk of inserts in a single transaction on both tables and the power fails in the middle, what will be the status? ...
1
vote
0answers
54 views

Archival storage tool: fast, queryable, has api, reliable

I have large quantities of structured data coming in over the network from disparate sources, and that data is archived in the filesystem, parsed/analyzed, and eventually makes it's way into a ...
116
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5answers
34k views

LVM dangers and caveats

I have recently started using LVM on some servers for hard drives larger than 1 TB. They're useful, expandable and quite easy to install. However, I could not find any data about the dangers and ...
5
votes
3answers
4k views

Making SATA disk write cache safe

Supposedly (see, e.g., a question about it here), with NCQ enabled drives, the drive write cache is supposed to be safe, as in it doesn't like to the OS about data being committed to the platters when ...
5
votes
2answers
1k views

PCI Compliance: File Integrity Checkers [closed]

We're looking for a file integrity checker for our windows server environment. Anyone have any good suggestions?
1
vote
2answers
946 views

Upload over HTTPS is reliable?

Sometimes we are facing a problem with corrupted files after upload through HTTP protocol. Today I’ve read an article that says that TCP protocol is not 100% reliable due to weak CRC algorithm and ...
2
votes
5answers
2k views

Is there any value in checking MD5 of files after they have been unzipped?

A project I am working on currently requires that the user runs an MD5 hash checking tool on the entire project, after it has been unzipped. They do not currently request that the ZIP itself is ...
0
votes
2answers
385 views

SQL: Find Last Integrity Check Date

Is there a way to check when was the last integrity check run for each database? I know when the service startup it checks for these values, so they exist, and they are probably writen on the ...
5
votes
2answers
3k views

It is XFS reliable? In case of a power gone off is xfs riskier that ext3 in data corruption/safey?

I have been having some electrical issues,mostly power going out suddenly for a few months,and although ups solve the thing mostly. But still i am worried about filesystem corruption,and data lost. ...
5
votes
2answers
6k views

How to check PostgreSQL database integrity?

Is there a way to check PostgreSQL database(s) integrity and consistency? I know about SQL Server DBCC CHECKDB and wonder if there is something similar to PostgreSQL.
0
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3answers
42 views

How two or more guest OS's hosted in a virtual environment handles editing of single resource?

I know this sounds very general question. Consider 2 OS's running using virtualization say operating system level virtualization. How concurrency is handled if both hosted OS using same resource and ...
0
votes
1answer
260 views

Why does DBCC CHECKTABLE report errors on non-existent pages?

When I run DBCC CHECKDB, I get a slew of error messages like this: Table error: object ID 2020918271, index ID 1, partition ID 72057594196590592, alloc unit ID 72057594190233600 (type In-row ...
0
votes
3answers
2k views

How to verify integrity of a remote file transfer

Is there any way I can verify the integrity of a remotely transferred file? I am currently transferring a large amount of files and folders from an ftp server to another remote server using wget, but ...
0
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2answers
72 views

Is there a service I can run which will automatically test CPU/RAM/hardware in the background?

Is there any service which runs in the background, and does the job of prime95 (i.e. it tests server CPU/RAM for integrity now and again)? Regards, Shane. p.s. The reason I ask: we recently had some ...
0
votes
1answer
485 views

Best way to add a new non-nullable column?

I'm a web developer, with admin rights on our SQLServer, and I need to add a non-nullable integer column (foreign key) to an existing table. I'm looking for the best way to create this column and ...
5
votes
4answers
436 views

Disaster Recovery/Sabotage Protection for a small business

I've been contacted by two partners in a small professional firm. They are concerned about their other partner and want to take some steps to be absolutely sure that the company's data and systems ...
6
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4answers
1k views

USB storage media - data integrity issues on linux

I've always been somewhat paranoid about verifying data backed up to removable media, so after copying stuff to a USB flash drive or portable HDD, I invariably unmount the drive, remount it and diff ...
13
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6answers
8k views

SATA Disks that handle write caching properly?

It's pretty common to see advice to disable the write cache on individual disks used for databases because otherwise some disks will acknowledge writes that haven't yet made it to the disk surface. ...