Re: Data disaster preparedness and recovery without RAID
Sent from my iPad
> On Dec 14, 2023, at 1:51 PM, David Christensen <dpchrist@holgerdanske.com> wrote:
>
> On 12/14/23 08:04, Pocket wrote:
>>> On Dec 14, 2023, at 4:09 AM, David Christensen <dpchrist@holgerdanske.com> wrote:
>>> Another benefit of ZFS snapshots is that they are are atomic. (Yet another is that they are taken quickly.) So long as your app or service has its files in a consistent state (ideally, closed), restoring from the snapshot should produce a set of files that work correctly.
>> Radioactive I see
>
>
> Do not eat files that glow blue. ;-)
My files glow Greene so I am safe
>
>
>>> On 12/13/23 10:42, Pocket wrote:
>>>> After removing raid, I completely redesigned my network to be more inline with the howtos and other information.
>>>
>>> Please elaborate regarding "redesigned my network" with respect to not needing RAID.
>> Gave me the impetus fix see the errors of my ways
>
>
> Please explain your ways and perhaps the readers will identity errors.
Nothing is broke so fixes not needed
>
>
>>>> I have a "git" server that has all my setup/custom/building scripts and all my programming and solidworks projects.
>>>
>>> I assume your git(1) server has a repository and it is on a single disk with rsync(1) backups. If the repository disk crashes, you replace it with another disk, and you restore from backup, what happens to clients who checked out projects after the backup? To clients that checked in changed projects after the backup? Is recovery less work that replacing a bad disk in RAID?
>> You assume wrong
>
>
> Please explain how your git(1) server stores content without RAID, how clients respond to the two scenarios outlined above, and how the recovery effort compares to RAID recovery.
>
>
>>>> I have DELPHI build apps going back to about 1995.
>>>
>>> Do you mean:
>>>
>>> https://www.embarcadero.com/products/delphi
>> Nope Borland
>
>
> https://en.wikipedia.org/wiki/History_of_Delphi_(software)
>
> On February 8, 2006, Borland announced that it was looking for a buyer for its IDE and database line of products, including Delphi, to concentrate on its ALM line. Instead of selling it, Borland transferred the development tools group to an independent, wholly owned subsidiary company named CodeGear on November 14, 2006.
> ...
> Borland sold CodeGear to Embarcadero Technologies in 2008. Embarcadero retained the CodeGear division created by Borland to identify its tool and database offerings but identified its own database tools under the DatabaseGear name.
> ...
> In October 2015, Embarcadero was purchased by Idera Software. Idera continues to run the developer tools division under the Embarcadero brand.
>
Nope Borland
>
>>>> It all backed up to a backup server(master and slave) and also a 4TB offline external hard drive. I have not "lost" any information since.
>>>
>>> Please elaborate "master and slave" with respect to not needing RAID.
>> Same as DNS
>
>
> Do you mean using a distributed architecture similar to DNS for backups, or something else? Please explain.
Do you understand DNS?
>
>
> David
>
Reply to: