Re: [opensuse] 11.2 - what was the reasoning behind disabling sshd by default?
- From: Richard Creighton <rccj@xxxxxxxxxxx>
- Date: Mon, 23 Nov 2009 13:10:45 -0500
On Sat November 21 2009 1:49:20 pm John Andersen wrote:
On 11/21/2009 9:34 AM, Richard Creighton wrote:
The use of multiple computers each
using RAID gives me fault tolerance AND backup with the backup being
controlled via a product called CrashPlan, but could be effected via
rsync/cron scripts.
I never consider mere copies as backup.
While I applaud you setup for its fault tolerance, a single
backup copy is a scenario that has burned me in the past such
that I never rely on it any more other than as a disaster
cache.
Too often the bone-headed deletion or disastrous program change
is faithfully replicated across the synced mirrors before
anyone can detect it.
Like yours, my servers and critical workstations are all raid machines.
My synced copies are on similar machines (using Unison )
located is in a different city. Unison is also used by several
laptops that need working caches of some sub-trees (principally
for software development).
<snip>
One advantage I have found to CrashPlan is that it compresses, maintains
copies of historical versions <n deep>, copies of erased versions as desired,
and copies on multiple machines both locally and remotely which can be
restored on demand. The paid version can back up real-time, the free
version will back up once every day or upon demand. If your destination is
a RAID array which is fault tolerant device, you have pretty good hardware
tolerance. Another good feature is that CP periodically checks the stored
image(s) to ensure they will reconstruct properly and will notify you if it
finds any fault that would prevent it. So no surprises when it is needed
down the road. It also notifies you if it is unable to complete a backup
for any reason. All in all, the combination of RAID for fault tolerance of
large media of my primary system AND my RAID tolerant backups has saved my
keester on more than one occasion and fortunately, having more than one
backup has so far proven unnecessary redundancy, but IMO, just as soon as I
decide to eliminate that redundancy, I will find I needed it, so I don't.
Disks are cheap enough now to invest in that as backup. For those that
can't afford it, there are services like CrashPlan that offer thousands of
Terrabytes of network storage over the internet at reasonable annual rates.
I agree with you about tapes. PITA, but better than nothing.
--
Richard
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- [opensuse] 11.2 - what was the reasoning behind disabling sshd by default?
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- From: Richard Creighton
- Re: [opensuse] 11.2 - what was the reasoning behind disabling sshd by default?
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- [opensuse] 11.2 - what was the reasoning behind disabling sshd by default?
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