FreeNAS Newb help picking hardware.

[Bidule0hm]

No, this line only apply if you use the built-in RAID. It doesn't apply at all for ZFS vdevs ;)

 

[eddie200112]

Awesome, is it the same if you buy an additional SATA or SAS controller then too, it could span both or all 3 controllers?

 

[Bidule0hm]

Yes ;)

 

[eddie200112]

OK thanks! I was also consider the supermicro X10SRH-CF which has 10xSata and 8x SAS. its about $150 more than the X10SRL-F which only has 10x SATA ports. If I feel I will need more than 10 ports within a year or 2 is it better for me to get the X10SRH-CF or would it be less $$ and as reliable to just buy an expansion card for the X10SRL-F later down the road?

Also and sorry this is very newbie of me but so the X10SRH-CF has 2 sas connectors. if I want to use SATA drives on them I get whats essentially a 4 way splitter for each sas port correct?

 

[Bidule0hm]

The IBM M1015 is very well renowned here and is about $100 to $150 on ebay so it's pretty much the same price so only your needs will do the difference ;)

Yes, they are called SFF-8087 breakout cable ;)

 

[Ericloewe]

The IBM M1015 is very well renowned here and is about $100 to $150 on ebay so it's pretty much the same price so only your needs will do the difference ;)

Yes, they are called SFF-8087 breakout cable ;)

Actually, SAS 3 uses a new connector, SFF something or other. They're still electrically compatible, so SAS3 stuff is compatible with older stuff.
Do note that SAS3 drivers and firmware are not very mature yet and bugs do exist when using SAS2 expanders with the LSI SAS 3008.

 

[Bidule0hm]

Argh, sorry for that.

I guess you need to read the manual of the MB to know which connector it is ;)

 

[eddie200112]

IS there any benefit say in stability or reliability to have all of that on the MOBO over using an expander..

 

[Bidule0hm]

I would say one less connector that can make a bad contact and a lower profile... :)

 

[eddie200112]

Sorry one more question before I order one of those boards. So right now I have 5x 4TB HDD's almost full each. how many HDD's would I have to have in a Vdev to provide the max redundancy. I read on the powerpoint made by Cyberjock that an example of 6 HDDs can survive any 2 HDD failures, So does that I mean I would need say 7 or 8 or 9 drives to back up the data I have now? how do I predict that? I remember in old fashion raid is was just a 1:1 ratio so this is odd to me. Thanks!

 

[eddie200112]

Also whats the difference between the intel i350 and i210 NIC's any benefit to one over the other?

 

[Bidule0hm]

"6 HDDs can survive any 2 HDD failures" this is wrong. The redundancy is a function of the RAID-Z type, not the number of drives. For maximum redundancy you need to pick RAID-Z3.

Please re-read cyberjock's guide, read the ZFS article on wikipedia, etc.

 

[Ericloewe]

I'm sure something changed from the i210 to the i350, other than the i350 being a native multi-GbE controller. I'm also sure it won't matter to you if you have to ask.

 

[eddie200112]

"6 HDDs can survive any 2 HDD failures" this is wrong. The redundancy is a function of the RAID-Z type, not the number of drives. For maximum redundancy you need to pick RAID-Z3.

Please re-read cyberjock's guide, read the ZFS article on wikipedia, etc.

Yes sorry I understood that's dependent on the Raid Z type. I guess I didn't phrase that the best way, but still then in RAID-Z3 how do you know how many drives of redundancy you will need?

 

[Bidule0hm]

"but still then in RAID-Z3 how do you know how many drives of redundancy you will need?" this is non-sense. RAID-Z3 has always 3 drives of redundance so you can lose 3 drives without problems.

 

[eddie200112]

So it would always be 3 drives over the storage space you need? so if I have 5x 4TB drives ill need only 3x 4TB drives for full redundancy in Z3?

 

[Bidule0hm]

"So it would always be 3 drives over the storage space you need? so if I have 5x 4TB drives ill need only 3x 4TB drives for full redundancy in Z3?" What? this is total non-sense. Please read cyberjock's guide and the ZFS wiki article again. You should also read the RAID article on wiki too.

 

[eddie200112]

How does everyone feel about the different brands of memory for super micro boards? Samsung, micron, Hynix, others?.. Crucial? Should I not deviate from the tested models on the supermicro website or have people had success with other sticks?

 

[eddie200112]

OK I read the wiki and im still unsure but maybe im phrasing it wrong.. How many drives would I need to store 20TB of data using 4TB drives with RAID-Z3.

 

[danb35]

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