[aklug] Re: Raid "degraded"?

I'd be interested to know how many off the shelf as well as server class UPS solutions
don't always use the smart inverter (AVR). I thought the silliness of having a UPS that
has a warm/cold standby inverter that sits there matching phase all day long until
something goes ape was no longer commonly available.

- Shane

On 10/08/2010 10:57 AM, Damien Hull wrote:
> Good info... I always tell people when buying a UPS to make sure it
> has an AVR. I had Stan explain what it does. Wanted more details.
>
> Now I just need to get bak on RAID. I don't like having my data on one drive.
>
> On Oct 8, 2010, at 10:46 AM, Arthur Corliss <acorliss@nevaeh-linux.org> wrote:
>
>> On Fri, 8 Oct 2010, Damien Hull wrote:
>>
>>> Follow Arthurs instructions. Here's where I add my 2 cents. Even if
>>> you can add it back I would replace the drive. I don't know why but
>>> RAID seems to be picky about drives. If it kicked it out there might
>>> be a good reason it did so.
>>>
>>> You could run it until it kicks it out a second time. Assuming you
>>> even get to add it back.
>>>
>>> Maybe someone else with more knowledge can explain why RAID is picky.
>>> Just something I've noticed.
>>
>> FWIW I've found that software RAID can throw errors because of power issues.
>> I've had perfectly good drives (drives that repeatedly survive write-pattern
>> tests) ejected. Putting those systems on a voltage regulator or some other
>> line conditioning/UPS made them much more stable. Odds are, if the drive is
>> going bad because of bad sectors, etc., it'll get ejected again, and it'll
>> need to be replaced.
>>
>> I put my servers at home on APC 1750VA microprocessor-controlled multi-tap
>> transformers. Picked them up many years ago used for $20/ea at AK Used
>> Computers, and I wouldn't run without them now.
>>
>> --Arthur Corliss
>> Live Free or Die
> ---------
> To unsubscribe, send email to <aklug-request@aklug.org>
> with 'unsubscribe' in the message body.
>

---------
To unsubscribe, send email to <aklug-request@aklug.org>
with 'unsubscribe' in the message body.
Received on Sat Oct 9 07:53:24 2010