[ale] backup/restore mail from USB external drive

[Lightner, Jeff]

RAID5 having 2 failures is not theory - it happens and the larger the drives the longer it takes to rebuild increasing the risk.  I've seen such failures on more than one occasion.

I've yet to see 3 disks fail before a rebuild completes in either a RAID6 or RAID10 setup.   I agree that RAID10 if available is much better from a performance standpoint.

We have several RAID6 sets with 2 TB SATA drives in our Hitachi array and the rebuild time for such drives is several hours which is why they're in RAID6.   The performance is good because the array itself has significant amount of cache.

Jeffrey C. Lightner
Sr. UNIX Administrator

DS Waters of America, Inc.
5660 New Northside Drive NW
Suite 250
Atlanta, GA  30328

P: 678-486-3516
C: 678-772-0018
F: 678-460-3603
E: jlightner at water.com





-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of JD
Sent: Thursday, February 13, 2014 4:57 AM
To: ale at ale.org
Subject: Re: [ale] backup/restore mail from USB external drive

On 02/12/2014 11:09 PM, Jim Kinney wrote:
> I've been getting 4TB SAS2 drives for <$430

Picked up a 4TB Hitachi SATA for $160 last week. 3 yr warranty.
I'm hoping this is a batch from before WD screws up their quality. ;) _______________________________________________
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