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161713
May 31st, 2014 14:00
Precision T7400 not recognizing Seagate SAS Hard Drive 4TB
I purchased a Seagate 4TB Barracuda Internal Desktop Hard Drive - 3.5" Form Factor, SATA III 6 Gb/s, 64 MB Cache - ST4000DM000 for my Precision T7400. On boot it recognizes the disk, but does not give a capacity. Within Windows, the drive is not listed. However, I am able to view it with Disk Management. In Disk Management, the drive is unallocated and only reads as 2048.00gb instead of the 4000.00gb. I have updated my bios and sas drivers in the Dell support section. Solutions? Fixes? Bios setting changes? Additional Drivers? Just wasted money on a 4TB hd?
Thanks everyone!
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Mary G
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20.1K Posts
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May 31st, 2014 15:00
It has to be formatted to get recognized correctly. What operating system?
theflash1932
11 Legend
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16.3K Posts
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May 31st, 2014 16:00
Do you have it connected to the motherboard or a controller card? If a card, which one? If the motherboard, try updating the chipset/AHCI drivers to the latest (may need to get them from Intel if Dell's are not recent).
Dev Mgr
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May 31st, 2014 18:00
Did you connect the 4TB drive to one of the SAS ports on the motherboard? If so, that's likely why you can only see the first 2TB.
I have the successor to your T7400; the T7500. This has a SAS6iR card built onto the motherboard. This card (and the bigger brother the PERC6) only supports drives up to 2TB (2048GB to be precise). I can't find it in the T7400 manual, but I suspect it to have either a SAS5 card or SAS6 card on the motherboard.
Your only choice to use the full 4TB is to connect it to one of the SATA ports, but not make it a boot drive (as the T7400 doesn't support UEFI, it can only boot from MBR disks, so it can only use the first 2TB of any given drive).
On my T7500 a 4TB Hitachi drive is working just fine when connected to one of the SATA ports.
If your drive is an actual SAS drive (and therefor won't connect to a SATA port), your only options are to either get a PCIe SAS controller that supports drives larger than 2TB, or replace the drive with a smaller drive (no larger than 2TB). From Dell this would mean any H-series PERC (H200, H310, H700, H710), but there are also many LSI options that will likely work just fine in your T7400.
tbui98
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November 17th, 2014 17:00
I'm using Seagate 3-3TB (ST3000DM001) and Western Digital 2-3TB (WD30EZRXSP) as secondary drives in my T7400. I'm running 2008R2 (Win7 equilvalent I think) 64-bit. For the drives that are plugged in the SAS ports, I saw exactly what you see-- only 2048GB. Only the one that plugged into the SATA will let me format with GPT and it sees 3TB (2.7 something). So, I plug each one into the SATA port, format it, and then put it in the SAS port. Once formatted, windows seems to see all of them fine (hopefully, I haven't run into any issue yet). I use a SSD as a boot drive. Hope it helps.
tlh129
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December 30th, 2014 11:00
I have a T7500. I can't even get mine to see a 2TB Seagate. Can you tell me where you went to get your updates? I was able to reformat the drive in Windows via an external usb/sata device. However, the internal board does not work at all.
speedstep
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December 30th, 2014 11:00
There are INTEL RST and Motherboard Bios Limitations. WDC handles this with a Highpoint Rocket 620-OEM Series HBA. Larger than 2TB GPT partitions require 64 bit versions of windows. 2TB is the max limit for MBR.
R600 Adapter.pdf
[View:WDC 3TB Installation Video]
http://www.newegg.com/Product/Product.aspx?Item=N82E16816115072
tlh129
2 Posts
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December 30th, 2014 12:00
Thanks SpeedStep. I figured that would definitely be the easiest solution, but it is just frustrating that this otherwise awesome machine can't see a 2TB drive. I have 192GB RAM installed but it can't see a 2TB drive. So did you exhaust everything else?