[ale] backup/restore mail from USB external drive

Jim Kinney jim.kinney at gmail.com
Thu Feb 13 11:17:28 EST 2014


That really stinks! It also sound like really dirty power.
On Feb 13, 2014 10:50 AM, "John Heim" <john at johnheim.com> wrote:

> It happened to me twice in the past 7 months on the same server. Two disk
> failed w/i 48 hours of each other twice.
>
> PS: In the past year, I've also had the HD controllers fail on both of our
> front end mail servers on the same day. And one time a fan in the server
> room flew apart and one of the blades cut the power line to the server rack.
>
> On 02/13/14 07:18, Lightner, Jeff wrote:
>
>> 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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>
>
> --
> John Heim
> email: john at johnheim.com  skype: john.g.heim
>
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