The Mana World Forums

I would like to apologise for the comment I made (I can't find it) about the wiki editing. I thought it was deliberately removed, and backdated for reediting.

In my defence, I thought that it would have been saved in more than one place, as a backup. There is a system that can be followed to ensure smooth running of all things.

Still, if it is needed, I am available to edit the wiki if required again, but my time is limited in more ways than one, as I have other things that are on a higher priority. If needed, I would like to suggest that at LEAST two copies are kept by independent machines on a regular basis for backing up. I can't volunteer my own machine, I am sorry, although a separate wiki could be added to a website without public access on the person's server. That way the responsible person could back it up on a regular basis.

There is never absolute backup, and partial data loss risk is always possible

Regards.

MadCamel wrote:

Only wimps use tape backup: real men just upload their important stuff on ftp, and let the rest of the world mirror it

Torvalds, Linus (1996-07-20). Post to linux.dev.kernel newsgroup.

True. few days back I got my hdd crashed & lost some data on it. But regained some of the important files from the cloud that I uploaded earlier

btw, speiros might have meant of RAID systems or twinning. Yeah that wouldnt be bad if data loss happens frequently.

RAID is not a backup system, and how it is supposed to help if some hacker deletes the data?

Regards.

Platyna wrote:RAID is not a backup system, and how it is supposed to help if some hacker deletes the data?

Regards.

Hacking scenario is different, for that you need to increase security level.
Using mirroring technique like RAID or so you can reduce data loss due to hard disk failure or so.

Well, how about version control mechanism ? (dont know if it's feasible here )

edit: i meant wiki editing while i said version control

iceslice wrote:

Platyna wrote:RAID is not a backup system, and how it is supposed to help if some hacker deletes the data?

Regards.

Hacking scenario is different, for that you need to increase security level.

Wow, how enlightening, thanks! Nothing like that would never come on my mind...

Using mirroring technique like RAID or so you can reduce data loss due to hard disk failure or so.

Well, how about version control mechanism ? (dont know if it's feasible here :oops: )

Here I should post a bitter comment like the above, as it is quite impertinent to teach such revelations someone who does that stuff for 13 years. But well.

The reason why Platinum doesn't have RAID is purely financial - hardware controller is expensive and software RAID is crap, if you buy me such controller (SATAII for HP Proliant DL140G3), I will even wake up myself and a service man at 3 AM to install it, I can PM you the address where to send it, after you bought it. Thanks!

What Platinum currently has is hot spare disk, that can be replaced, and then machine is rebooted from PXE to imager that will automaticaly restore the system from last backup, whole procedure takes about 10 minutes, I can do rm -rf / everyday without you even noticing.

All data, since the new backup server came back (its absence was also caused by financial reasons), currently full backup is made every week, incremental is made everyday, databases & mail is also done daily), it still cannot secure us from silent data corruption etc. every sysadmin knows that Chocolate Cupcake can always happen, users tends to fail to understand this, as they think we have magic wand or crystal ball like in hacker movies where some skinny teenager can undelete files from any file system deleted any century ago.

I can configure whatever toy is available on the market, but you have to face that if you want me to do so, you need to buy me this toy, especially now, when I prefer to buy myself a new useful book, or a microscope, as I have other interests in my life than just computers.

Regards.

Platyna wrote:

iceslice wrote:

Platyna wrote:RAID is not a backup system, and how it is supposed to help if some hacker deletes the data?

Regards.

Hacking scenario is different, for that you need to increase security level.

Wow, how enlightening, thanks! Nothing like that would never come on my mind...

.........
Regards.

then I repeat, you need to increase security level at the cost of users ease. The more features a system provides for its users the more security holes there will be for hackers to hack. That's why windows is more prone to.


BTW, THANKS FOR THE INFOZ but you didnt need to take it so personally
I just had my views & I myself learn stuffs thru that. (that's another reason why I like this game )

I have a pretty big pile of pci-x 3ware controllers from retired machines kicking around if you'd like one before they hit ebay. They are "short" cards and will fit most styles of 1u, but I only have the "tall" style of backing plates for them.

Software raid isn't too bad unless the machine is heavily loaded. It just means 2x the data has to go over the bus, and that HP server looks to have a nice fast bus. I switched from HW to SW raid1 with my current generation of boxes and am loving it. Cheaper, equal(sometimes better, depending on workload) performance, and best of all no funky vendor-specific tools for array management.

PXE restore: niiiice. I hope to get that going soon, do you use any software to make it easier/more automated you can recommend, or is it more self-made?

(apologies for dragging thread waaay offtopic, I can't resist sysadmin talk lol)

iceslice wrote:Well, how about version control mechanism ? (dont know if it's feasible here )

edit: i meant wiki editing while i said version control

Wikis have the built-in.

Madcamel: http://www.systemimager.org/

Regards.