Re: RAID array failure with Intel ICH6R problem solved....
- From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
- Date: Mon, 30 May 2005 15:19:53 +1000
all IMHO, OK?
There are SATA, but no IDE (that I know of), drives which _approach_ the
minimum requirements for servers. Look for drives of either 36 or 72GB size
(coincidentally similar to SCSI sizes rather than 'consumer' IDE/SATA sizes)
with high spin rates (10K is high for SATA/IDE), high MTBF figures, long
warranties, and importantly in an SBS system Native Command Queueing.
There are SATA and IDE RAID controllers which also satisfy the minimum
requirements for servers, you are unlikely to get one for less than AU$200
and most of them run about AU$700+. There are exceptions. Server RAID must
allow you to be alerted to RAID degradation and _importantly_ inspect and
possibly modify the RAID status while the server is up.
There is no such thing as an 'inexpensive' server RAID system, RAID comes in
two classes, (CHEAP & NASTY) or (Server Class). I use a cheap & nasty for my
LoungeAN because I believe I can recover from most disaster scenarios. The
particular cheap & nasty I use has basic management and monitoring under
windows, this is more than I can say for several systems I recently became
responsible for. My LoungeAN, though it only has one local user now,
performs like a dog. I've tested it running SCSI and performance is greatly
improved (it could also do with more RAM though).
GOOD SCSI RAID, fast RAM, and _sufficient_ CPU, SBS ROCKS!!!
"Jeff Teel" <jdteel@xxxxxxxxxxxx> wrote in message
news:uOTiH8MZFHA.2688@xxxxxxxxxxxxxxxxxxxxxxx
> Are there any IDE drives made specifically for servers? I'm just curious.
> They are obviously used by many server manufactures but that doesn't mean
> they are right for that application. I am assuming that they are offering
> them because they are a less expensive choice for drives than SCSI.
>
> Thanks
> Jeff
>
> "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx> wrote in message
> news:%23ca3TKMZFHA.3364@xxxxxxxxxxxxxxxxxxxxxxx
>> much simpler to remember:
>>
>> When building RAID arrays use SCSI drives designed for servers.
>>
>> "Marshall Lai" <marshall_lai@xxxxxxxxx> wrote in message
>> news:OPQh0FMZFHA.3364@xxxxxxxxxxxxxxxxxxxxxxx
>>> Just an update on my problem with RAID arrays failing on ICH6R and
>>> occasionally on the onboard SI controller. The problem seems to be that
>>> the drives would park their heads during periods of high I/Os and
>>> consequently cause a lot of IAstor.sys not responding error (on ICH6R)
>>> or device not responding errors on Silicon Image controller.
>>>
>>> Initially thought it was a power supply problem and replaced power
>>> supply with one of high outputs. However, the problem remained even
>>> with only 2 RAID1 arrays.
>>>
>>> Turns out that I had been using Seagate drives (4X160G SATA 7200.7
>>> non-NCQ, 3X 1600G SATA 7200.7 non-NCQ, tried 4X1600 SATA 7200.7 NCQ as
>>> well). I switched all drives to the new Maxtor DiamondMax10 series and
>>> the problem disappeared. So I think there could be problems with using
>>> Seagate drives in RAID configurations (not the first time they did
>>> this). The Seagate drives were flawless when they are not in RAID config
>>> but fails frequently in RAID.
>>>
>>> So moral (for me at least) is, "When building IDE/SATA RAID arrays, use
>>> non-Seagate harddisks........."
>>>
>>> My 2 cents. Hopefully would save some poor soul from wasting 2 months
>>> on troubleshooting RAID issues...
>>>
>>
>>
>
>
.
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