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1 Rookie

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May 1st, 2024 17:22

T7910 SAS SSD 2.5" Drives max storage - help!

Hi,

I have a little confusion about the max possible storage that I can use in T7910 (the same confusion in the T7810)

I have many 2.5" enterprise grade 12 Gbps drives  (SAS and SSD SAS), with different capacities (from 400G to 8To).

I want to push to the max, but when I read user manual, and from what I understand (see attached), the max will be:

-> 8 x 400G SSD SAS, Or

-> 8x 1.8 To SAS 10k, Or

-> 8x 600G SAS 15k

Is it that?

If I want to use 4 x 2.5" drives (SAS or SSD SAS), what can be the limit?

PS: if the limit is 400G SAS SSD, why they are proposing PX02SMB160 witch is 1.6 To SSD SAS?! https://www.dell.com/support/home/fr-fr/drivers/driversdetails?driverid=2n3cv

Thank you a lot for helping me to fix this misunderstanding.

1 Rookie

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17 Posts

May 2nd, 2024 03:01

My T7910 rig has:

HDD's

2 HGST 18TB, One HGST 10TB, One WD Black 8TB

SSD's

Two Samsung 870 EVO 2TB

Two Samsung 870 EVO 4TB

In other words, you're fine to use whatever capacity drives you have, or want.

(edited)

5 Practitioner

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5.5K Posts

May 1st, 2024 21:09

The system specs only listed the capacity Dell had tested and validated for that system and with the available OEM drives for sale at the time.  As time progress, larger capacity drives that match standard storage protocol can be used for upgrade.

While you can use any largest capacity SATA drives in the market, SAS drives have a limitation by the storage controller.  Maximum expansion SAS capacity can only be known by trial and error.

1 Rookie

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39 Posts

May 2nd, 2024 09:48

@mctalks​ 

That's HUGE :)

Ok, I will try with my SAS SSD drives.

Thanks for your reply.

1 Rookie

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17 Posts

May 2nd, 2024 16:35

@Abidal​ yours was actually a good question as I had the same one at one time. I had an old T7400 that wouldn't read any drives above 2TB when connected to the motherboard. I solved that problem by purchasing a pcie SATA Gen 3 card. Bios recognizes drives connected to a pcie card as USB where capacity limitations don't apply, so I plugged in my WD Black 8TB with no issues, and subsequently purchased other, even higher capacity drives. When I bought my T7910, I noticed the same capacity limitations you posted, but I thought I'd try my 8TB drive and realized that I would have no problems, so I installed the rest of them.

(edited)

1 Rookie

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39 Posts

May 2nd, 2024 17:02

@mctalks​ 

I hope that will not have an issue at the transfer rate (12 Gbps).

I will try this and will monitor drives to see if all is ok.

Thanks you once again.

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