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1995
April 10th, 2018 10:00
Poweredge T310 problems with drives > 2.2TB
Hi,
I have a Poweredge T310 with a PERC H200 and 4 x 3 TB SATA drives. I am running Ubuntu 16.04 on an additional ssd. The Problem is that Ubuntu does not recognize the 3TB of space, instead just 2.2TB. Now I did choose GPT for partition table on the drives and I also installed the latest firmware update for the T310. However when I'm in the unified server configurator and look for the capacity of my drives it does show me 3TB.
What am I missing her?
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DELL-Josh Cr
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April 10th, 2018 13:00
Hi,
Can you private message me the service tag so we can get some additional information?
Are the drives in a raid array?
DELL-Josh Cr
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April 11th, 2018 09:00
Are the drives in passthrough mode on the controller and you are going to use software raid? What does lsblk show?
speedstep
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47K Posts
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April 11th, 2018 10:00
Larger than 2TB requires 64 Bit UEFI class 2.3.1 or higher BIOS and 64 bit OS.
PERC H200 does not support SATA only SAS AND does not support greater than 2TB.
The ability to use the full capacity of these drives is dependent on the factors listed below –
The 2-TB barrier is the result of this 32-bit limitation. Because the maximum number that can be represented by using 32-bits is 4,294,967,295, this translates to 2.199 TB of capacity by using 512-byte sectors (approximately 2.2 TB). Therefore, a capacity beyond 2.2 TB is not addressable.
The Limitations also apply to INTEL ICH Raid as well as Hardware Raid.
To make more bits available for addressing, the storage device must be initialized by using 64 Bit UEFI GPT. This partitioning scheme lets up to 64 bits of information be used within logical sectors.
To meet these conditions, the following prerequisites apply:
VMWare ESX has some specific limitations at 2 TB: ESX does not support 2 terabyte LUN sizes
IMPORTANT NOTE! Only the Dell H700 and H800 currently support the 3TB drives - NO earlier controllers, such as the PERC4/5/6, SAS5/6 (or ANY other Dell controller not mentioned) have this support and in some cases, even though you may be able to see the drive, this has NOT been tested or validated, so possible data loss could be experienced. ONLY use the Dell H700 and H800 with the proper firmware to ensure a tested and validated >2TB solution! For non-Dell controllers, contact the controller vendor for their support statement on >2TB drives.
Dell H700/800 and H200 will only support SAS drives.
Dell PERC H700 and H800 –
monple
2 Posts
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April 12th, 2018 06:00
What is exactly the passthrough mode and where can I set it up?
Yes I want to do a software raid.
lsblk output:
Yesterday a plugged a drive into a SATA-Port and then it showed me the 3TB.
So it has to be something with the controller, right?
I checked my BIOS version, which is 1.5.2. So pretty old, but since i do not use the drives for booting it should not be a problem!?