On 2013-03-13, Arun Khan wrote:
> Thanks to everyone for sharing your thoughts, suggestions and
> comments. I am still leaning towards a hardware raid controller but
> will look into the MegaRAID controllers as well.
All of the controllers mentioned so far--3ware, MegaRAID (both made by
LSI), an
On Wed, Mar 13, 2013 at 4:08 PM, Arun Khan wrote:
> On Wed, Mar 13, 2013 at 6:37 PM, SilverTip257 wrote:
> > On Tue, Mar 12, 2013 at 10:10 PM, Keith Keller wrote:
> >
> >> On 2013-03-12, SilverTip257 wrote:
> >> >
> >> > I've not had any MegaRAID controllers fail, so I can only say they've
> >>
On Wed, Mar 13, 2013 at 3:08 PM, Arun Khan wrote:
>>
>> I'll argue that the software RAID process is slightly more complex. And it
>> is crucial that one remember to hot-remove the disk ... after all one
>> could panic their box by just yanking the drive.
>>
>
> Yes, this could happen inspite of
On Wed, Mar 13, 2013 at 11:04 PM, Keith Keller wrote:
> On 2013-03-13, SilverTip257 wrote:
>>
>> I'll argue that the software RAID process is slightly more complex. And it
>> is crucial that one remember to hot-remove the disk ... after all one
>> could panic their box by just yanking the drive.
2013/3/13 Gordon Messmer :
> On 03/12/2013 01:30 AM, Arun Khan wrote:
>>
>> @ Gordon - thanks for sharing this piece of info! In case of RAID
>> card failure, it is important to be able to recover the data (RAID
>> device) with a compatible replacement.Are the LSI MegaRAID
>> controller more r
On Wed, Mar 13, 2013 at 6:37 PM, SilverTip257 wrote:
> On Tue, Mar 12, 2013 at 10:10 PM, Keith Keller wrote:
>
>> On 2013-03-12, SilverTip257 wrote:
>> >
>> > I've not had any MegaRAID controllers fail, so I can only say they've
>> been
>> > reliable thus far!
>>
>> I think that this is not a hel
On Wed, Mar 13, 2013 at 7:40 AM, Keith Keller wrote:
> On 2013-03-12, SilverTip257 wrote:
>>
>> I've not had any MegaRAID controllers fail, so I can only say they've been
>> reliable thus far!
>
> I think that this is not a helpful comment for the OP. He wants to
> know, in the event the control
On 03/12/2013 01:30 AM, Arun Khan wrote:
>
> @ Gordon - thanks for sharing this piece of info! In case of RAID
> card failure, it is important to be able to recover the data (RAID
> device) with a compatible replacement.Are the LSI MegaRAID
> controller more reliable in this respect?
I don't
On Wed, Mar 13, 2013 at 12:01 AM, Keith Keller
wrote:
> On 2013-03-12, Arun Khan wrote:
>>
>> Software RAID is an option but I don't think hot swap is possible
>> without some tinkering with the mdadm tool a priori.
>
> Hot-swapping a failed drive is basically the same process AFAICT with a
> 3wa
Keith Keller wrote:
> On 2013-03-13, SilverTip257 wrote:
>>
>> I'll argue that the software RAID process is slightly more complex. And
>> it is crucial that one remember to hot-remove the disk ... after all one
>> could panic their box by just yanking the drive.
>
> Agreed, but the OP specificall
On 2013-03-13, SilverTip257 wrote:
>
> I'll argue that the software RAID process is slightly more complex. And it
> is crucial that one remember to hot-remove the disk ... after all one
> could panic their box by just yanking the drive.
Agreed, but the OP specifically mentioned wanting to avoid
On Tue, Mar 12, 2013 at 10:10 PM, Keith Keller <
kkel...@wombat.san-francisco.ca.us> wrote:
> On 2013-03-12, SilverTip257 wrote:
> >
> > I've not had any MegaRAID controllers fail, so I can only say they've
> been
> > reliable thus far!
>
> I think that this is not a helpful comment for the OP.
On 2013-03-12, SilverTip257 wrote:
>
> I've not had any MegaRAID controllers fail, so I can only say they've been
> reliable thus far!
I think that this is not a helpful comment for the OP. He wants to
know, in the event the controller does fail, can he replace it with a
similar-but-possibly-not
On Tue, Mar 12, 2013 at 4:30 AM, Arun Khan wrote:
> On Thu, Mar 7, 2013 at 12:07 AM, Gordon Messmer wrote:
> > On 03/06/2013 08:35 AM, Arun Khan wrote:
> >
> >> Any preference between 1 and 2 above.
> >
> > Based on about 10 years of running a hundred or so systems with 3ware
> > controllers, I
On 2013-03-12, Arun Khan wrote:
>
> Software RAID is an option but I don't think hot swap is possible
> without some tinkering with the mdadm tool a priori.
Hot-swapping a failed drive is basically the same process AFAICT with a
3ware array or an md array. The primary issue would be to make sure
On Thu, Mar 7, 2013 at 12:07 AM, Gordon Messmer wrote:
> On 03/06/2013 08:35 AM, Arun Khan wrote:
>
>> Any preference between 1 and 2 above.
>
> Based on about 10 years of running a hundred or so systems with 3ware
> controllers, I would say that you're better off with an LSI MegaRAID
> card, or w
On 2013-03-06, Keith Keller wrote:
>
> This is surprising to me. I've had one 3ware controller fail in 10 years.
I realized that this is untrue. I have had three 3ware controllers fail
on me in 10 years, out of about 25. That's actually a pretty poor
failure rate. Two of those failures were n
On 2013-03-06, Gordon Messmer wrote:
> On 03/06/2013 12:28 PM, Keith Keller wrote:
>> Please Note: 1) The default of the unit creation sets write cache
>> to "on" for performance reasons. However, if there is no BBU
>> available for the controller, a warning is sent to standard error.
>
> It is a
On 3/6/2013 1:40 PM, John R Pierce wrote:
> |megacli cfgldadd
> r6[||20||:||0||,||20||:||1||,||20||:||2||,||20||:||3||,||20||:||4||,||20||:||5||,||20||:||6||,||20||:||7||,||20||:||8||,||20||:||9||,||20||:||10||]
> a0|
> |m||egacli pdhsp set physdrv[||20||:||11||,20:12||] a0
yow, wtf happen
On 3/6/2013 1:05 PM, Gordon Messmer wrote:
> I don't know whether or not there's any noteworthy performance
> difference. MegaRAID cards have not been as prone to failure in my
> experience. The management software is definitely inferior.
megacli doth sucketh mightily, but its a little less anno
On 03/06/2013 12:28 PM, Keith Keller wrote:
> Please Note: 1) The default of the unit creation sets write cache
> to "on" for performance reasons. However, if there is no BBU
> available for the controller, a warning is sent to standard error.
It is a warning that there is no BBU, not a warning t
On 2013-03-06, Gordon Messmer wrote:
> On 03/06/2013 10:56 AM, Keith Keller wrote:
>> The other standard warnings about using these controllers apply (e.g.,
>> if using the write cache, have a BBU on the card
>
> A 3ware card will not enable write caching unless a BBU is present.
My man page for
On 03/06/2013 10:56 AM, Keith Keller wrote:
> The other standard warnings about using these controllers apply (e.g.,
> if using the write cache, have a BBU on the card
A 3ware card will not enable write caching unless a BBU is present.
___
CentOS maili
On 2013-03-06, Arun Khan wrote:
>
> I am looking for a hardware raid card that supports up to 4 SATA II
> hard disks with hot swap (compatible raid cage)
>
> I have short listed two LSI/3Ware cards:
> 1. 9750-4i
> 2. 9650SE-4LPML
>
> I would appreciate your personal experience with the CLI tools
>
On 03/06/2013 08:35 AM, Arun Khan wrote:
>
> Both appear to be well supported in Linux.
They are.
> I would appreciate your personal experience with the CLI tools
> provided by LSI.
> Can they be configured to send email for disk failures or SMART errors?
Not the CLI tools. You'll need to run 3
Greetings,
I am looking for a hardware raid card that supports up to 4 SATA II
hard disks with hot swap (compatible raid cage)
I have short listed two LSI/3Ware cards:
1. 9750-4i
2. 9650SE-4LPML
Both appear to be well supported in Linux.
I would appreciate your personal experience with the CLI
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