On Sun, 23 Oct 2011, Yedidyah Bar-David wrote:
Date: Sun, 23 Oct 2011 09:27:34 +0200
From: Yedidyah Bar-David <[email protected]>
To: Hetz Ben Hamo <[email protected]>
Cc: ILUG <[email protected]>
Subject: Re: remote directory/partition
On Sat, Oct 22, 2011 at 11:03:49PM +0200, Hetz Ben Hamo wrote:
Hi,
Here is a theoretical question:
Lets say I have a Linux server in Israel, and I have a block of storage
(lets say iSCSI partition for this example) in USA, and I want to mount it
on my server in Israel.
iSCSI over such a long distance and with big latency (thanks to our ISP's)
Not sure it's mainly the ISPs, BTW. You do also depend on the physics of
speed of light.
If you use IP over nutrino-based transport you might be able to shave a
few nanoseconds off the speed of light, see this:
http://www.wired.com/wiredscience/2011/09/neutrinos-faster-than-light/
Shavua tov,
- yba
is a big no no, it's too slow. NFS is also not a good idea (here's
why<http://goo.gl/vn4GM>
).
I can take this storage, format it and export it from my server in USA, but
which protocol would give me:
1. All (or almost all) functionality of a local mounted device
Do you need it read/write on both sides? If so, you are going to have
big problems if the link is cut.
2. Can work with long distance latencies
3. won't "kill" the machine if the remote directory is disconnected /
"disappeared"
4. If possible - supported (either directly or using 3rd party driver) on
Windows 2008 (Linux is the main concern, Windows is optional)
I used drbd on a LAN, and know that it can theoretically work rather well
on larger distance when used as read-write on one side only. They also
have a pay-for tool to do this asyncronously called drbd proxy. This
implies using a local copy and have drbd sync it. You can choose between
three what they call "Protocols" to affect the perceived local latency.
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