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John W. Verity

Make HDD Faster & More Reliable

John W. Verity
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WADCA
WADCA
12/29/2012 12:46:24 AM
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Kilo
Re: Stats explain it
@ John

"the more of those you bundle together, the less chance there is for the total collection to fail altogether;"

Every organization should perform a cost benefit analysis to see what is the maximum backup it can afford and the maximum loss it can sustain if the drives and their backup drive(s) fail. If you are a service provider then you should consider investing a bigger amount so as to protect the reputation.

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JohnVerity
JohnVerity
12/26/2012 1:55:35 PM
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Blogger
Stats explain it
The point of this X-IO thing is that it is redundant enough on its own that it will not fail for X number of years. It's really all a matter of statistics: Real-world measurements tell you how long an average drive will last and the more of those you bundle together, the less chance there is for the total collection to fail altogether; one drive backs up another drive bavks up another, etc., till the mean time between failure stretches out to many many years. 

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WADCA
WADCA
12/5/2012 12:33:51 PM
User Rank
Kilo
Re: Interesting
@ SaneIT

According to IT department, there was an unexpected requests for backup PCs due to the original ones going for repair; dont know if that was true. Even if it was true, you are right, should we bring PCs from home. I did thought about it and it wasnt an issue for me but I could log on to network from the personal PC which made it only usable at office for playing games.

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SaneIT
SaneIT
12/4/2012 7:53:40 AM
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Peta
Re: Interesting
That sounds fun, so it wasn't even IT that came up with a spare PC for you to work from?  What do people do if they don't know about this spare PC? Do they get to go home until their PC is repaired?  Honestly I can't say that I now of any IT departments that function this way and I'd be embarrassed if I was a member of that team.

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WADCA
WADCA
12/3/2012 8:48:44 AM
User Rank
Kilo
Re: Interesting
@ SaneIT

"That's surprising, how long did it take for them to get a replacement? "

They never did got a replacement. I was hanging in the middle while my bosses wanted me to get the tasks done and I couldnt do anything because of the stupid IT practices. One of my colleague told me that there is a spare PC in their department so you can take that till your's comes back after repair; so I got that. And then people say that businesses dont involve IT in IT-related decision making; how could we take an opinion of such IT departments.

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SaneIT
SaneIT
12/3/2012 7:24:05 AM
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Peta
Re: Interesting
That's surprising, how long did it take for them to get a replacement?  I'm assuming you mean an a desktop PC.  I'm hoping they don't have the same policy for server HDDs.

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Virtual
Virtual
11/30/2012 11:57:40 PM
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Kilo
Re: Interesting
@SaneiT  We try to keep spares  on hand as well for the very reasons you mention.

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WADCA
WADCA
11/30/2012 10:09:43 PM
User Rank
Kilo
Re: Interesting
@ SaneIT

Just two-three days back, my HDD got crashed and guess what the IT department said "We dont have backup HDD". So I can relate to the effectiveness of keeping 2 backup drives for every size well.

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WADCA
WADCA
11/29/2012 9:19:32 AM
User Rank
Kilo
Re: Interesting
@ Anthony Absolutely. By flexibility do you mean that the hdd is compatible with all OSs and processors?

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SaneIT
SaneIT
11/29/2012 8:14:34 AM
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Peta
Re: Interesting
I think it would be interesting to see some numbers regarding how many IT shops keep spare HDDs around.  We're a fairly small shop but we keep two of every drive size that we use even though most of our servers are still covered under a warranty of some sort.  It's just easier to replace the drive, let it start rebuilding then call the manufacturer to get the bad drive replaced.  I'd rather start the rebuild asap than wait until the end of an hour long phone call to get an RMA number before I address the problem.  I know the product that John was writing about is meant to reduce the need to replace drives but with it being a locked down enclosure I worry about it failing as a whole and not being able to get in and replace parts that are prone to failure.

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