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|10-16-2011 03:41 PM|
Bingo. This is exactly what I was saying (and BTW, I never said a single drive was safer then a RAID5, though I suspect the actual statistics might not be to far off between the two in non-enterprise applications). I was saying that a mirror or stripped mirror or even software mirroring are safer then raid 5. Raid 5 also doesn't buy you a statistically useful speed boost IMHO for *most* situations (video editing,etc will be different). And I certainly don't believe RAID 5's uptime exceeds a mirror or stripped mirror (or RAID 6).
I have about 22TB of online data and I use software mirroring (at the file level) because its easy and safe and the advantages of a raid mirror are not really needed in my case (the main one being that a drive failure doesn't cause downtime).
The company I worked for previously had over 900 servers and 50,000 users and didn't have any RAID5 array's left in production machines, and this was 6 years ago.
unRAID and some of the other software raids are really nice now. I especially like ZFS and RaidZ (and its various improvements).
Too many people are slapping together a 4-6 disk 2-3TB per disk RAID5 and dumping all their media on it and expecting it to be "safe" because it can survive a drive failure. The problem, like jason mentioned, is it also has to survive the rebuild process and it has to survive it without a *single* error, or it will fail and take the data with it.
|10-14-2011 08:26 PM|
|10-14-2011 04:45 PM|
I went w/ unRAID, though, for my NAS. All the advantages of RAID5 and many more pros, but none of the problems. It's not as fast, but over GbLAN your limited to the speed of about 1 HDD anyway. unRAID is so easy to add drives to; you can add any sized drives at anytime, and you get all the space. unRAID has 1 drive fault tolerance, but if you lose 2 or more drives you only lose the data on that 1 drive...and in most cases you can still get at 99%+ of that data unless it is a catastrophic failure. The data isn't striped, so you can pull any drive and access all of it's files on another PC.
|10-14-2011 04:43 PM|
i love people who think their one drive is representative of the population.
|10-14-2011 04:22 PM|
|johnp1||Sold out. I would have bough them. thanks for sharing!|
|10-14-2011 03:45 PM|
RAID5 is useful for uptime and performance ONLY... Everything on the array obviously still needs to be backed up!
|10-14-2011 03:26 PM|
|corenom||i posted this a few weeks ago and got 1 reply and thumbs down... the staples deal is WAY better|
|10-14-2011 03:15 PM|
I have about 14 drives (2TB) all mix from diff manufacturers.
The way I rank them from my personal experience of quality:
3x WD (Haven't have one failed on my yet),
4x Hitachi (1 failed and RMA),
3x Seagate ( 2 failed, and 1 started making lots of noise).
So, yes, I won't touch another Seagate again, not until I hear good feedback from LOTS of people.
|10-14-2011 02:48 PM|
|10-14-2011 02:43 PM|
|10-14-2011 02:40 PM|
I found Hitachi and WD much better, all are 2tb drives.
|10-14-2011 01:45 PM|
|10-14-2011 01:20 PM|
I tend to either use "dumb raid" (IE, automated directory mirroring) since I get some versioning control doing it that way, or I use a mirror or RAID10 if I need faster access speeds. RAID6 is excellent but typically needs a more expensive card then I'm willing to buy (though you can find a nice RAID6 capable dell card on ebay pretty cheap usually).
I know some people will argue with me about RAID5's reliability but its just not a good choice for the way it is typically used at the hobbiest level. People use it like a big backup drive and its much less safe then that.
Of course, your talking to someone who mirrors all their data on HDDs and backs up to a LTO-3 tape drive (or blu-ray, depending on the items... or both. lol)
|10-14-2011 12:50 PM|
I heard from my cousin in Canada that NCIX is the biggest mail order company in Canada. He compare it to Newegg in USA.
Dont lke 5900 drives.
|10-14-2011 12:29 PM|
|FriendlyFires||I'd stay away from these. 2 of mine died after a year. While they do have a 5 year warranty. You still have to pay your own shipping.|
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