R.A.I.D is...

Namuna

Platinum Member
Jun 20, 2000
2,435
1
0
Redundant Array of Independent Drives.

Why and where do people get the idea that the 'I' is for Inexpensive???!!!

I don't think SCSI drives are 'Inexpensive', do you?


<All your drives are belong to us> HA! Now you Zig neffers can't jump in!
 

Zoltar

Senior member
May 1, 2000
796
0
0
SCSI. Small computer system interface.

BTW,

All your acronyms are belong to us
 

Namuna

Platinum Member
Jun 20, 2000
2,435
1
0
Zoltar,

You SICK, TWISTED, EVIL BASTARD! :Q

All your NEFs are belong to us!!!!
 

Valhalla1

Diamond Member
Oct 13, 1999
8,678
0
76
pretty sure its &quot;inexpensive&quot; not &quot;independant&quot;. read that in maximum pc
 

Zoltar

Senior member
May 1, 2000
796
0
0
Yes.

RAID = Redundant Array of Inexpensive Devices.

SCSI = What I said before.

BTW,

ALL your acronyms ARE belong to us.....Again.
 

geno

Lifer
Dec 26, 1999
25,074
4
0
I've read both &quot;inexpensive&quot; and &quot;independant&quot; from reliable sources. I seem to think that it's &quot;independant&quot; due to the fact that RAID was more widely incorporated in SCSI environments. Now, if RAID was invented around the time USB was, and geared towards cheap but fast storage, then I'd lean towards inexpensive :)
 

SVTPower

Senior member
Dec 8, 2000
646
0
0
I think when it was invented it was in comparison to the multi levels of Cache on the BIG servers like MainFrames where they were much cheaper then Solid State.
 

Valhalla1

Diamond Member
Oct 13, 1999
8,678
0
76
the originators of SCSI really wanted it to be pronounced &quot;sexy&quot; instead of &quot;scuzzy&quot; :Q
 

RGN

Diamond Member
Feb 24, 2000
6,623
6
81
Inexpensive: When RAID was invented, storage was VERY expensive. The ability to hook several drive together to work together was an amazing technological feat. It saved LOTS of money.
 

vi edit

Elite Member
Super Moderator
Oct 28, 1999
62,484
8,345
126
I've always been told that it was &quot;I&quot; for &quot;Inexpensive&quot;.

 

beer

Lifer
Jun 27, 2000
11,169
1
0
I have an old, old book on hard drives (late 80s) and it refers to it as Redundant Array of Inexpensive Disks
 

shiner

Lifer
Jul 18, 2000
17,112
1
0
Sorry, but in this case Webster's is wrong. I can pull out any number of books from my collection that say R.A.I.D. = Redundant Array of Inexpensive Disks.

That's the way it's always been and always will be. Think about it...Independent makes no sense in the R.A.I.D. context....go on...think about it.
 

kohutek

Member
Nov 29, 2000
171
0
0
why would it be 'independent' disks? The whole point is to make them one disk, not multiple independent ones. Inexpensive makes much more sense; 2 8GB 7200rpm IDE drives are cheaper than 1 16gb 10000RPM SCSI drive, and in stripe mode, offer similar, if not better, performance.

[edit]
And, for the earlier part of it, a chain of SCSI devices in RAID configuration is *way* cheaper than any of the solid state gargantuan drives that used to populate mainframes.
[/edit]

Inexpensive.

randal
 

shiner

Lifer
Jul 18, 2000
17,112
1
0


<< why would it be 'independent' disks? The whole point is to make them one disk, not multiple independent ones. Inexpensive makes much more sense; 2 8GB 7200rpm IDE drives are cheaper than 1 16gb 10000RPM SCSI drive, and in stripe mode, offer similar, if not better, performance >>



BINGO!!! Someone gets it!!!!
 

shiner

Lifer
Jul 18, 2000
17,112
1
0
Here's the info from the dictionary link...notice what the name of the books are that thee info in the entry was pulled from.

Redundant Arrays of Independent Disks

<storage, architecture> (RAID. Originally &quot;Redundant Arrays of Inexpensive Disks&quot;) A project at the computer science department of the University of California at Berkeley, under the direction of Professor Katz, in conjunction with Professor John Ousterhout and Professor David Patterson.

The project is reaching its culmination with the implementation of a prototype disk array file server with a capacity of 40 GBytes and a sustained bandwidth of 80 MBytes/second. The server is being interfaced to a 1 Gb/s local area network. A new initiative, which is part of the Sequoia 2000 Project, seeks to construct a geographically distributed storage system spanning disk arrays and automated libraries of optical disks and tapes. The project will extend the interleaved storage techniques so successfully applied to disks to tertiary storage devices. A key element of the research will be to develop techniques for managing latency in the I/O and network paths.

The original (&quot;..Inexpensive..&quot;) term referred to the 3.5 and 5.25 inch disks used for the first RAID system but no longer applies.

The following standard RAID specifications exist:

RAID 0 Non-redundant striped array RAID 1 Mirrored arrays RAID 2 Parallel array with ECC RAID 3 Parallel array with parity RAID 4 Striped array with parity RAID 5 Striped array with rotating parity

ftp://wuarchive.wustl.edu/doc/techreports/berkeley.edu/raid/raidPapers. http://HTTP.CS.Berkeley.EDU/projects/parallel/research_summaries/14-Computer-Architecture/.


[&quot;A Case for Redundant Arrays of Inexpensive Disks (RAID)&quot;, &quot;D. A. Patterson and G. Gibson and R. H. Katz&quot;, Proc ACM SIGMOD Conf, Chicago, IL, Jun 1988].

[&quot;Introduction to Redundant Arrays of Inexpensive Disks (RAID)&quot;, &quot;D. A. Patterson and P. Chen and G. Gibson and R. H. Katz&quot;, IEEE COMPCON 89, San Francisco, Feb-Mar 1989].