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Bulk Data Storage For The Common Man?
Vigyaan writes "Lately, I have been looking into different bulk data storage options available to a common man. My work
depends on generating, storing and analyzing a
large amount of data -- averaging about 1 TB per
month. I would like to have a storage system which is automated, fast, reliable
and most importantly does not cost the price of an
eye. Right now, I have a 4 node Linux cluster with
10 large hard disks (total capacity 1.6 TB); data storage roughly costs
about $0.60/GB (excluding the cost of PC
hardware). But long term storage is painful -- DVDs
cost about $0.10-$0.15/GB but takes too much human time
and leaving data on hard disks makes me nervous
because of possible failures. RAID is a possibility, but it increases the cost significantly. I was wondering, if
Slashdot readers have any recommendations for a
cheap automated way to store and retrieve data."
I was wondering, if Slashdot readers have any recommendations for a cheap automated way to store and retrieve data."
Although the good ones don't come cheap. I guess this another case of "pick any two."
KFG
Buy some inexpensive IDE drives with high storage capacity and use a software raid solution. What kind of budget do you have anyway?
Ahh the large amount of data that has X value versus a storage solution...
If your data is worth $20,000.00 then a $2000.00 solution is dirt cheap.
what is your data worth? that is where you need to start and then look at the 10-30% of the data's value to start looking at how must to spend on it's storage.
If 1 month's data was lost forever, how much money would it cost the company? that is your actual $ amount that you should be shopping at.
and that is how I got the company to buy a $20,000.00 1000 tape DLT jukebox.
my data is worth over $100,000 a month and is much lower than yours is size.
That is where you need to start. Justify your storage costs by figureing out what it is worth to begin with.
Do not look at laser with remaining good eye.
because it protects against device failure, not *user* error. if you delete a file from a raid array, it's gone. that's part of what offline is all about.
eric
Build yourself a cluster of cheap boxes with cheap IDE disks and replicate your data across them. Because the data is replicated across your cluster, no need for backups or RAID.
So, you can put your data on 4-5 HD's, 10 tapes or 232 DVD's per month. The Cost of doing so will be about $500 per month for the tapes or HD's and $50 for the DVD's (assuming your time cost $0)
At work, we had a need to keep a few TB of data online permanently, so we purchased a few NexSAN ATABeast's. At $50,000 for 10TB of usable storage ($5/GB), they may be a bit out of your price range. The advantage is that you can hold almost a years worth of data and it is protected by RAID5. It also makes management a lot easier, since it is very difficult to mount 42 300G drives in a single chassis (and it takes only 4U of rack space).
On the low end, NexSAN has the ATABoy2 or ATABaby (2TB or 1TB) for the $8-$15K range. This will let you hold a months worth of data
On the high end, You have EMC disk arrays (Think upwards or $20+/GB for the 'cheap' stuff from them.
Overall, if you have 1TB per month, you need to either a) get a grant to fund your work, b) hire somebody to swap DVD's for you or b) seriously rethink your data generation.
Any of the "cheap" storage methods have serious drawbacks, and the low cost ones are, well, not so low cost if $15,000 sounds like a lot of money to you.
otherwise, good luck
Now call me crazy, but have folks completely forgotten the age old solution, TAPE? A SDLT tape goes for about $50 and holds about 320GB, LTO holds even more, and I believe Quantum has just released the latest generation of SDLT. While its not "cheap" an autoloader can be had for about $15,000 that can backup many TB hands off. Might be a bit much initially, but it the best solution long term
You are in a maze of twisted little posts, all alike.