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FileRescue Plus and SAN?

By mulhollands ·
Files have been accidentally deleted from our SAN. No backup is available. Would FileRescue Plus recover files deleted from the SAN?

Stephen Mulholland

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questions

by LordInfidel In reply to FileRescue Plus and SAN?

the system(s) that are in control over that slice of the san, have you rebooted them?

if not.... don't... very important, stay away from the reboot....

the san is just presenting a disk subsystem to the OS.

The OS is still in conrtol of the actual file table.

If you have Undelete by Executive Software, you can actually plop the cd in and run the emergency option and it will search the disks for uncommitted transactions.

just do not reboot, whatever you do. Everytime you reboot your chances of recovering the files are cut by more then half.

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This is

by Don_C In reply to FileRescue Plus and SAN?

Going to be a Dumm question what is a SAN system

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Not a dumb question

by LordInfidel In reply to This is

It's not something the average user or the small IT shop will come across.

SAN stands for Storage Area Network.

It is basically a drive array that not only is scalable but is also faster.

This is different then NAS (Network Attached Storage) where a pc/srvr typically plugs into it via ethernet.

A SAN will typically use a HBA fibre adapter to connect itself to a system. And you will normally have redundant adapters in each server.

One of the other huge benefits of a SAN is the fact that it can be used as a shared media device. That is, the same disk subsystem can be shared by many different servers. (Although, when used under windows it does not work very well, *nix based systems this works just fine).

What I mean by a shared disk subsystem is, imagine a hard drive sitting in between 2 computers, and they both not only can own the drive, but can read and write to the drive. The SAN interface has the ability to use "Selective Presentation" where you can choose what partitions a system connected to the SAN can see and use.

I mentioned scalability, where you can dynamically add more drive arrays to an existing SAN. Plus SAN's will natively do RAID+10, 2 RAID--5 arrays mirrored.

SAN technology allows for faster I/O access by using an intelligent caching mechanism.

And is very expensive, where the starter SAN will run around the 100k range.

Check out HP's site for their line of SAN products.
http://h18006.www1.hp.com/storage/saninfrastructure.html

and

http://h18006.www1.hp.com/storage/arraysystems.html

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by mulhollands In reply to Not a dumb question

Yes, that's what I was just about to say. :)

Stephen

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I'm new

by Don_C In reply to

Thanks guy's I'm just a newbie trying to learn the IT world


Don

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