On Tue, 29 Sep 2015, Carlos E. R. wrote:
Greg just said that the CPU time required for a simple 2-disk mirror is only minimal. Such unquantified statements do just not mean anything. If you're talking about a 6-disk raid 5 perhaps it is going to matter, you know? I just don't know. But I'm not going to look up data because just you are not doing it :p. You are the one making the statements, then back it up.
No, it doesn't work that way, I'm not going to prove anything. I investigated the issue a decade or two ago, I was satisfied, and that's it. If you want hard facts, you will have to search them yourself. I'm not going to dig out magazines on the basement and scan them ;-)
But if you google "hardware raid versus software raid perfomance" you find hits. The first one is a paper from adaptec. Another one is a benchmark.
It does work that way. If you had done that, you would actually have disseminated information. This way, you disseminate nothing except misinformation. Without numbers, such claims are worthless, and from Greg's statement it is clear that "large" is not even true. I am still not interested in it because I know for a fact that "large" is not true. And it would also depend on the RAID type, etc.
Guess what it is. Perhaps you already know it. What or which is the one ncurses menu-style blue-interface-with-white-lines application on Linux that is just awesome?
mc, pine, lynx, yast...
Never liked MC though. Yast is slow. I use Alpine daily. But it's just grey on black; perhaps that is important. Lynx is important at times (or links, w3c, elinks) but not what I consider awesome. No I was actually mentioning.... "iptraf" ;D.
So I can just say that at present, I am at a loss of how to manage my raid. I barely know what to do in case of failure. Yes, SEARCH THE WEB.
If it is Linux software raid, there are some howtos at TLDP.
Which has been deprecated and replaced by a wiki that is pointless to read as a howto ;-). But perhaps still relevant. It seems raidtools was superseded by mdadm but it seems also very much that raidtools are much easier to use. Well, I don't have time now, but at least I learned something. Now I don't know if raidtools will still work on my debian host but I guess it depends on /etc/raidtab file? It is weird, there is only /etc/mdadm/mdadm.conf or something and it was created by the installer and still every tool complains that it is faulty or corrupt. And there is nothing wrong with it that I can see but it still claims I have no arrays defined, so it just starts all arrays from the superblock at boot, supposedly. Thanks brotha. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org