[ILUG] Why RAID
ilug at labarry.com
Wed Jul 14 00:32:48 IST 2004
With regards to RAID,
Its a matter of choice whatever option you choose. If you have a stand alone
machine, RAID might be seen as overkill, if you have a mission critical
machine, RAID, along with a solid backup plan is essential, Better safe than
If you are a home user, forget about RAID, unless you want to try it out.
For a business. RAID is as essential as a solid backup schedule, regardless
what operating system you happen to choose. Integrity of data is the
ultimate goal and you cannot rely on hardware reliability alone.
I recently had an 8 month old server with 4 quantum 40GB SCSI disks (in a
raid array) baulk one after another. one failed and was replaced, RAID
rebuilt the replaced disk like it was supposed to. Disk 2 failed was
replaced as well, RAID rebuilt, no user intervention, except for physically
swapping the disks and more importantly no data loss. Ultimatly fault lay
with a dodgy batch of Quantums supplied by the vendor and one after one they
The point of this story is as we all should know, hardware can fail, Backups
can ease the pain but there is no substitute for a well planned disk layout.
Best Regards and my tuppence worth.
----- Original Message -----
From: "Rick Moen" <rick at linuxmafia.com>
To: "ILUG" <ilug at linux.ie>
Sent: Tuesday, July 13, 2004 4:45 PM
Subject: Re: [ILUG] Why RAID
> Quoting Timothy Murphy (tim at birdsnest.maths.tcd.ie):
>> Personally I just rsync to an ancient (PII) machine with a large disk.
> That's backup, not redundancy. More on that below.
>> The chances of a total disk failure are negligible in my experience
>> (especially with SCSI disks).
>> I'd actually be more worried about 2 disks on the same machine
>> being struck by lightning, pee-ed on by the cat, etc.
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