[OmniOS-discuss] supermicro 3U all-in one storage system

[Jim Klimov]

20 марта 2016 г. 21:41:10 CET, Geoff Nordli <geoffn at gnaa.net> пишет:
>
>http://www.newegg.com/Product/Product.aspx?Item=9SIA5EM2KP1657
>
>Also, I created a new thread about the differences with 4kn and 512e.  
>Logically, it would make sense the performance would be the same.   I 
>think it would then depend on which one is cheaper.
>
>thanks,
>
>Geoff
>
>
>On 16-03-20 01:15 AM, Matej Žerovnik wrote:
>> As far as I see, there are no 4Kn 4TB SAS drives, only 6TB.
>>
>>  From performance view, is there any different between 4Kn or 512e
>that is formated with ashift=12?
>>
>> Matej
>>
>>> On 19 Mar 2016, at 19:19, Geoff Nordli <geoffn at gnaa.net> wrote:
>>>
>>> I have had really good luck with the Seagate drives as well.
>>>
>>> I see you are running the ST4000NM0034, any reason why you didn't go
>with the  ST4000NM0014 which is 4Kn?
>>>
>>> thanks,
>>>
>>> Geoff
>>>
>>>
>>> On 16-03-19 04:21 AM, Matej Žerovnik wrote:
>>>> Hey there,
>>>>
>>>> I’m just about to expand my SAN with LSI 3008 HBA. As far as I
>know, support for 3008 has been in Illumos for about a year if not
>more, so it should be stable. I did have problems with getting sas3ircu
>and sas3flash utils from LSI page working, but in the end, I had to get
>an older version (5.00) for it to work (I got it from nexenta github
>repo).
>>>>
>>>> As far as HDD goes, I’m currently running around 100 Seagate SAS3
>drives (ST4000NM0034) and none of them died in 4 months that I have
>them. I know it’s not a long era, but so far so good:) I also have
>around 180 Seagate Constellation 4TB SATA drives (ST4000NM0033) for
>over 3 years and only one or two drives died.
>>>>
>>>> Matej
>>>>
>>>>> On 19 Mar 2016, at 00:12, Geoff Nordli <geoffn at gnaa.net> wrote:
>>>>>
>>>>> Hi.
>>>>>
>>>>> I have had good luck with the SuperStorage 6037R-E1R16L chassis
>with the LSI 2308 IT mode HBA.
>>>>>
>>>>> Thoughts on the
>http://www.supermicro.com/products/system/3U/6038/SSG-6038R-E1CR16L.cfm.
>It has the LSI 3008 HBA and Intel x540 network cards.
>>>>>
>>>>> I want to get at least 4TB 3.5" SAS drives.  Any suggestions on
>those?
>>>>>
>>>>> I will be installing the latest version of Ominos.
>>>>>
>>>>> thanks,
>>>>>
>>>>> Geoff
>>>>>
>>>>>
>
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I'd guess 4kn drives have 4k native sectors and expose them as such. 512e drives have 4kn sectors and expose RME ability to write smaller sectors for backwards compatibility. 512n drives have 512byte sectors (with ecc for each 512b, not 4kb as the two above).

Then it depends if alignment etc. do not cause 512e disks to go into rmw - otherwise it "should be" same as 4kn for 4k*N writes. Depends on vendor firmware from here onwards ;)

Jim
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