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1answer
22 views

Why is data stored on a flash disk irretrievable if the memory chip is cracked? [closed]

All data recovery companies, regardless of skill, unanimously say that if the memory chip of a device has just a hair line crack, data recovery is impossible. Not unlikely, not expensive, but ...
1
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2answers
547 views

What is the difference between storage media and storage devices [closed]

I am having confusion whether storage media and storage devices are the same terms. I found on this yahoo answers page that ...
1
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2answers
83 views

Does the performance of matrix multiplication depend on the storage of the array?

Two matrices can be stored in either row major or column major order in contiguous memory. Does the time complexity of computing their multiplication vary depending on the storage scheme? That is, I ...
3
votes
1answer
164 views

Why do some filesystems have fragmentation and others don't?

I try to understand why fragmentation is a problem for NTFS and FAT but not when using inodes. In all cases, files are not necessarily stored in a contiguous fashion so I don't see the problem for the ...
2
votes
1answer
436 views

SSTF disk scheduling algorithm? What if lowest seek times are equal in either direction?

Using the Shortest-Seek-Time-First (SSTF) disk scheduling algorithm (where we select a request with a minimum seek time from the current head position), what happens if the requests in both directions ...
2
votes
1answer
158 views

Processes and Segmentation

The following problem was on my final and in Gate 2006, but I don't understand how to solve it: Different methods of memory management have different overheads: ...
0
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1answer
38 views

calculating storage based upon on eps? [closed]

If an organization collects an average of 20,000 EPS over eight hours of an ongoing incident, that will require sorting and analysis of 576,000,000 data records. Using a 300 byte average size, that ...
2
votes
1answer
173 views

Calculate storage requirements for a data set

I have a simple problem. I can't seem to even find the right search terms to get me pointed in the direction I need to be heading. I'm writing a bunch of integers to disk. Lot's of them. Starting ...
5
votes
4answers
2k views

Is the 2nd parity bit in RAID 6 a simple calculation?

I'm trying to understand how the 2nd parity bit or byte is set in RAID 6. I'm reading a paper by H. Peter Anvin, and it goes into Galois field algebra, which is somewhat new to me. Anyway, a rep from ...
6
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0answers
51 views

Distributed Storage for Access and Preservation

My organization wants to maintain multiple copies of data in order to preserve access in the case of localized disasters as well as for the purpose of long term preservation. Are there accepted formal ...