[CentOS] how do i have a clone centos server

[Mail Administrator]

Thnaks john,

u gave me a  grt idea ..
the second one
seems quite interestin

but i do have to get additional HDD and mirror my existing server which
has jus one disk

thnks and regards

simon


> John R Pierce wrote:
>> Johnny Hughes wrote:
>>> The easiest way to make that happen is to use a product called DRBD
>>
>> do be aware, drbd replicas are not 'safe' for things like transactional
>> databases, unless they are configured to be synchronous (such that a
>> fsync doesn't return until its written on both the local disk AND the
>> replica), which slows everything way down.
>
> If you can tolerate a small amount of downtime, a more simple-minded
> approach is to get servers with swappable drive carriers, set up your
> production servers with all partitions on raid1, and keep a spare
> similar chassis around.  Then if a single drive dies (the most likely
> failure), you just swap in a new one and resync the mirrors.   If the
> motherboard or power supply dies, you swap the drives into the spare and
> come up in the time it takes to reboot (you'll probably have to fix the
> NIC setup for the different hardware addresses, though.).
>
> --
>    Les Mikesell
>     lesmikesell at gmail.com
>
>
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