[SOLVED] What is SATA_56?

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Karadjgne
The pcie lanes in Port 1 come from the cpu, so use of the m.2(1) port with pcie doesnt affect port 1. If you use a Sata drive in the m.2(1), it disables port 1.
The pcie lanes in port 5/6 don't come from the cpu, they use a seperate sata controller, so use of pcie in m.2(2) uses both Sata lanes, which disables 5/6.

You only get 6 sata ports, total. So if there's a Sata in the m.2, that's 1, leaving 5 others. If you put pcie in m.2, it uses 2x, so that leaves 2/3/4 open. If using pcie in m.2(1), that's not Sata, so shouldn't be affected, leaving 1/2/3/4 open for Sata use.
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Great
Math Geek said:
that's right. using the m.2 slot will disable ports 5 & 6. each port uses a pcie lane while the m.2 slot uses 2 lanes. hence 2 disabled sata ports.

there is never enough lanes to go around so they have to come from somewhere.
Click to expand...
Great, thanks, so does that mean I cannot have anything plugged into SATA ports 5 & 6 when an M.2 drive is installed into M.2_2?
 
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it means you can not have anything plugged into those ports while using an m.2 drive. they are disabled and won't know something is plugged into them.

the ports will literally have no way to communicate since it's lanes have been given away. if you need extra ports, you'll have to go with an add-on card or NAS or other options.
 
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boju said:
See section 3.6.7 has more info there. Sata 5&6 aren't disabled if run nvme ssd in 2x mode in m2.2. 4x will.
Click to expand...
Ok, so my best bet is if I already have a M.2 in M.2_1 and now im going to put a M.2 in M.2_2, and have enough extra SATA ports for my 2 HDD and one SSD too run M.2_2 at 4x for fastest response ?
 
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the manual states that if the m2-1 device is sata based, then sata 1 is disabled. if it is pcie based, then sata 1 is ok to use.

slot m.2 -2 at x4 mode disables sata 5 & 6.

so if the m2-1 drive is pcie based, then you can still use ports 1-4. if it is sata based, then you can still use ports 2-4. either way is enough for the 3 drives you want to use.

if you don't know what kind of drive is in m2-1, then plug your 3 drives into ports 2-4 and know either way they should work.
 
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Depends on the m2 drive. If its sata based/or your setting it to 2x it can run the other sata ports.
I would lookup some reviews on the drive, as there are many drives listed with x4 that still dont do more than ~500MB/s, and would run fine at 2x speed.
 
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fry178 said:
Depends on the m2 drive. If its sata based/or your setting it to 2x it can run the other sata ports.
I would lookup some reviews on the drive, as there are many drives listed with x4 that still dont do more than ~500MB/s, and would run fine at 2x speed.
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Ok, the two drives I have are both Samsung 970 EVO NVMe, I do have an SSD plugged into my SATA_1 port and have an M.2 plugged into my M.2_1 and the SSD and the M.2 are both recognized on my computer.
 
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[
Math Geek said:
the manual states that if the m2-1 device is sata based, then sata 1 is disabled. if it is pcie based, then sata 1 is ok to use.

slot m.2 -2 at x4 mode disables sata 5 & 6.

so if the m2-1 drive is pcie based, then you can still use ports 1-4. if it is sata based, then you can still use ports 2-4. either way is enough for the 3 drives you want to use.

if you don't know what kind of drive is in m2-1, then plug your 3 drives into ports 2-4 and know either way they should work.
Click to expand...


Ok, the two drives I have are both Samsung 970 EVO NVMe, I do have an SSD plugged into my SATA_1 port and have an M.2 plugged into my M.2_1 and the SSD and the M.2 are both recognized on my computer. does that mean the Samsung 970 Evo is PCIE based then?

EDIT: I just saw this on the specs : PCIe Gen3. X4

Thank you for answering my questions, when my second Samsung 970 Evo comes in, is there an advantage removing the SSD from SATA_1 and moving it too SATA_2 so SATA_1, SATA_5, and SATA_6 are free and clear of any other devices?
 
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M.2_1 Configuration: [Auto][SATA mode][PCIE mode]

[Auto] Auto-detects the M.2 device mode. If a SATA device is detected, SATA6G_1 will be disabled.

[SATA mode] Only supports M.2 SATA devices. Please note that SATA6G_1 port cannot
be used in this mode.

[PCIE mode] Only supports M.2 PCIE devices.

---

M.2_2 PCIe Bandwidth Configuration: [X2][X4]

[X2] Run at X2 mode with SATA6G_56 enabled.
[X4] Run at X4 mode for higher performance with SATA6G_56 disabled.

---

First m2 slot can have either sata or pcie m2. If use sata m2, sata slot 1 is disabled. But doesn't really clarify if using pcie ssd, sata 1 isn't disabled. I would think it won't be.

Second m2 slot only houses pcie m2 sata. If run at x4 mode, sata ports 5&6 are disabled. If x2 mode, 5&6 can be used. On page 10 it says 4x shares ports 5&6, i think the manual should have said 2x there not 4x. "Sharing" more sounds like sharing the bandwidth rather than disable.
 
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boju said:
M.2_1 Configuration: [Auto][SATA mode][PCIE mode]

[Auto] Auto-detects the M.2 device mode. If a SATA device is detected, SATA6G_1 will be disabled.

[SATA mode] Only supports M.2 SATA devices. Please note that SATA6G_1 port cannot
be used in this mode.

[PCIE mode] Only supports M.2 PCIE devices.

---

M.2_2 PCIe Bandwidth Configuration: [X2][X4]

[X2] Run at X2 mode with SATA6G_56 enabled.
[X4] Run at X4 mode for higher performance with SATA6G_56 disabled.

---

First m2 slot can have either sata or pcie m2. If use sata m2, sata slot 1 is disabled. But doesn't really clarify if using pcie ssd, sata 1 isn't disabled. I would think it won't be.

Second m2 slot only houses pcie m2 sata. If run at x4 mode, sata ports 5&6 are disabled. If x2 mode, 5&6 can be used. On page 10 it says 4x shares ports 5&6, i think the manual should have said 2x there not 4x. "Sharing" more sounds like sharing the bandwidth rather than disable.
Click to expand...

Great, Thank you for all your help
 
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Thank you all for helping out with this question.

So the two M.2 devices I have are both Samsung 970 EVO NVMe. (one I already owned, and the other I just ordered and on its way.) This is my plan when my other M.2 comes in.

-Physically remove any devices from SATA_1, SATA_5, SATA_6 ports and only use SATA_2, SATA_3, SATA_4 ports.
-Change BIOS M.2_1 PCIe Bandwidth Configuration to X4 for higher performance

is that correct? any other changes I want to make?
 
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That would be best scenario.
One thing, most nvme drives only go past (continous) sata speeds for a few gigs,
after that they drop in sequential speed to that of drives running sata3.

So if you plan on using one drive to store/work with files past 5gb,
getting a slower (but maybe bigger) sata based nvme wouldn't be too bad.
Crucial mx500, or the mx300.
They also have protection (e.g. os crash/power loss), so they can finish writing data still in cache.

I also prefer not to go with same brand/model for all drives.
If there are issues (hardware/firmware) it would affect all your drives at once.
Especially if you use one for backup.
 
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Unless i dont have enough ports (itx/matx), i prefer to run one drive per port,
and nothing on the shared ones.
the manual states it disables the port if a sata nvme is used, so i assume its still gonna impact the pcx drive even if the sata mode isnt used.
 
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The pcie lanes in Port 1 come from the cpu, so use of the m.2(1) port with pcie doesnt affect port 1. If you use a Sata drive in the m.2(1), it disables port 1.
The pcie lanes in port 5/6 don't come from the cpu, they use a seperate sata controller, so use of pcie in m.2(2) uses both Sata lanes, which disables 5/6.

You only get 6 sata ports, total. So if there's a Sata in the m.2, that's 1, leaving 5 others. If you put pcie in m.2, it uses 2x, so that leaves 2/3/4 open. If using pcie in m.2(1), that's not Sata, so shouldn't be affected, leaving 1/2/3/4 open for Sata use.
 
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