Question about raid card limitations

[Chillitzel]

I was trying to learn about limitations of the raid cards about size of the disks;

I was checking this site but didn't see any kind of size limitations of a single disk or total size limitations is there a way to learn about that?

If it's noob question I'm really sorry

[SorryBella]

Generally, RAID cards are not limited to HDD size, its the count. And from that PDF, the drive count limits are this:

 

This means that there are 2 Mini-SAS connectors, that can be split to 8 ports, that can be splitted more up to 128 HDD.

 

(i know someone gonna butcher me over this, im talking from little experience i have with RAID cards.)

[Electronics Wizardy]

Basically all semi modern raid cards(about 2010 and newer) have a very high limit, in the hundreds of terabytes. There won't be drives that reach that limit for a while. There was a gen of sas cards before those, and they were almost all limited to 2TiB.

[SorryBella]

1 minute ago, Electronics Wizardy said:

Basically all semi modern raid cards(about 2010 and newer) have a very high limit, in the hundreds of terabytes. There won't be drives that reach that limit for a while. There was a gen of sas cards before those, and they were almost all limited to 2TiB.

Interesting. What happened when that gen of SAS cards detect something like a WD Red 4TB? would it just bork itself or just straight not detected?

Ps: nice

[Electronics Wizardy]

Just now, SorryClaire said:

Interesting. What happened when that gen of SAS cards detect something like a WD Red 4TB? would it just bork itself or just straight not detected?

Ps: nice

On those cards you get the first 2TiB of the drive usable. It works, but you can't use the whole drive.

[leadeater]

2 minutes ago, Electronics Wizardy said:

Basically all semi modern raid cards(about 2010 and newer) have a very high limit, in the hundreds of terabytes. There won't be drives that reach that limit for a while. There was a gen of sas cards before those, and they were almost all limited to 2TiB.

SAS1 or SAS Generation 1, SAS2 and newer have an upper limit that is too high to matter.

 

As noted above the maximum drive count is more important but this is much higher than most will ever connect to a RAID card.

[leadeater]

1 minute ago, SorryClaire said:

Interesting. What happened when that gen of SAS cards detect something like a WD Red 4TB? would it just bork itself or just straight not detected?

Would only allow 2TB of it to be used

[Chillitzel]

10 minutes ago, SorryClaire said:

Generally, RAID cards are not limited to HDD size, its the count. And from that PDF, the drive count limits are this:

 

This means that there are 2 Mini-SAS connectors, that can be split to 8 ports, that can be splitted more up to 128 HDD.

 

(i know someone gonna butcher me over this, im talking from little experience i have with RAID cards.)

We have a DELL server with perc h710 mini which is based on LSISA2208 when I asked about it people told me from a reseller 16TB HDD won't work on that RAID Card.This is why I asked about it thanks for the answers ^^

[AbydosOne]

22 minutes ago, Chillitzel said:

LSISA2208

I can't speak to this model exactly, but the SAS2308 in the LSI 9207-8i card in my server definitely supports 10TB drives.

 

Some discussion on the matter. I don't see any indication there's a drive size limit on the H710 cards.