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Sept 3, 2001 WTC Post to this NG by
Mitch Monger
While searching the Google archives I came
across this post made to this NG on
Sept. 3, 2001 which bears reposting. It's
a classic.
....
Newsgroups: alt.computer.consultants,
alt.disasters.misc, comp.arch.storage
From: (Thor Lancelot Simon)
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RAID! by
_|_|_
I'm trying to find info on how Raid 5 works *in the case of 3 data
drives + 1 parity*. I understand how exor'ing 2 data would yield a
parity bit, but the 3data/1parity algorithm eludes me. I can't think
of how you'd have enough info to recover, even if there were such
a thing as a 3-input Exor....
( 1 2)
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June 12th 05 02:41 AM
by _LL
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SAN question by
[email protected]
Have what is probably a pretty basic question about setting up a SAN.
First off, I'm a networking guy at a fairly small but growing
company.
We (like everyone else on the planet ;) ) have a great deal of data
which needs to be centralized and archived. I'm looking at the HP
MSA1000 to meet our...
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June 10th 05 04:00 AM
by Andy
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335 |
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Serial attached scsi(SAS) by
Krishna
Hello All,
I had a quick question:
I was considering the Serial attached scsi cards, that are slowly
beginning to hit the market now. I had a little doubt, though, if I
plugged in the SAS card into my machine, would it need any special
drivers? ( I'm running Linux on my machine). Or would it show...
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June 10th 05 03:53 AM
by Andy
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June 9th 05 08:57 PM
by RPR
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Comparing some storage vendors by
Dan Stromberg
I know this is fuzzy as heck, and yes, as a techie it makes me a bit
squeamish, but if you have experience with the Storage Solutions of one or
more of the following vendors, I'd appreciate it greatly if you could give
me your subjective rating, on a scale from 1-10 rating (10 is best) of
the...
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118 |
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HBA max IOs by
[email protected]
Hello Group,
Does anyone in the group know what the max IOs an HBA like an emulex
lp9002 or Qlogic QLA2300 is capable of.
Thanks,
Vic
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HBA max IOs by
[email protected]
Hello Group,
Does anyone in the group know what the max IOs an HBA like an emulex
lp9002 or Qlogic QLA2300 is capable of.
Thanks,
Vic
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137 |
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AIT3 drive won't load tapes by
Chris
Problem: trying to read some AIT-3 tapes created in a Rorke library.
Background: Just got a Sony SDX-700C AIT-3 drive. It passes all
diagnostics with flying colors. New tapes written by the Sony diag's
are readable (block dumps) to my software. However, my friend's tapes,
from a Rorke AIT-3...
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192 |
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Storage Networking User Groups by
Elizabeth
Four new Storage Networking User Groups (SNUGs) recently formed in
Silicon Valley, San Francisco, Las Vegas, and New York. SNUGs are
communities of data storage technology users who hold face-to-face
meetings to discuss mutual challenges and learn from technology experts
in a vendor-neutral,...
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224 |
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Info on the IBM "Cypress" project? by
Maury Markowitz
I recently wrote a wiki article on the 1360 Photo-Digital Store. While
researching it I found mentions of two earlier projects, Cypress and
Walnut. I believe the former was the first REALLY BIG storage system,
and was used by the CIA (NSA?).
Can anyone help me hunt down details on either of these...
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260 |
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HP MSA 1500 - Hubs for redundancy? by
Kat
We have an MSA 1500 with dual controllers. Each had a single HBA, and each
HBA attached to a seperate switch. When one of the HBA's in a server failed,
we discovered that the path to the standby controller did not function,
obviously. So we were told my HP to buy a switch or a hub to rpovide...
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154 |
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303 |
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Best backup strategy when there is lots of re-structuring on HDD? by
Peter Frank
Hi,
I know there is backup software that allows incremental and
differential backups so that it isn't always necessary to backup
everything even if only some data were added or changed.
The problem is that in my case there is also a lot of re-structuring
going on with my data, i.e. data move from...
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459 |
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Windows 2000/2003 :What is the fasted way of coping files between servers by
Sun
hi all,
We are moving old server to new server. I am using robocopy command to
transfer data from old server to new server. But its taking long time
to copy all data (42GB took 9 hours). I am copying over the network by
mapping old machine share to new machine.
Is there better command or...
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365 |
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AMS DakotaRAID reviews? by
themeanies
Anyone using a DakotaRAID device for simple file storage. Hadn't heard
of them until a vendor suggestion. Thought I'd see how they really perform.
tM
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143 |
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June 2nd 05 03:30 PM
by Josha
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problems with Ultra DMA operations by
Eug
Hi there!
I have the following problem. I develop FPGA IP core for ATA HDD. I
have tested it on 40 GB 2.5" Fujitsu HDD. PIO and Ultra DMA operated
fine. When I switched to Maxtor DiamondMax HDD (3.5" 60 and 200 GB) it
was found out that after I perform Ultra DMA write operation (DMA
Write) I get...
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June 1st 05 07:17 AM
by Eug
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