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PaulRickels
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March 31st, 2022 14:00
PowerEdge R750 Windows Server 2022
Windows Server and configured OS on a 400 GB disk. (RAID 1 on embedded PERC H755). Disk manager lists - Disk 0 - [EFI Partition, OS Partition, Recovery Partition]. I expected this. Added second disk, 800GB (same RAID 1 on embedded PERC H755) Disk manager lists the new disk as - Disk 0 and changes the OS drive to Disk 1 - [EFI Partition, OS Partition, Recovery Partition]. Not what I expected. Added third disk, 17 TB (RAID 1 on PCIe PERC H755) and Disk numbers all shift again. Disk ) = 17TB, Disk 1 = 800 GB, Disk 2 400GB - [EFI Partition, OS Partition, Recovery Partition]. Change of drive positions and controller made no difference. BIOS or UEFI made no difference. Any clue why it is shifting disk #?
DELL-Joey C
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Posted March 31st, 2022 23:00
Hi @PaulRickels,
I think that's because of PERC 11 generation enumeration order has changed. For PERC H755, you may need to create the DATA VD first then OS VD. It as designed on the new generation PERC.
Reference on enumeration page 31: https://dell.to/3wVgj8r
DELL-Joey C
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Dell Technologies | Enterprise Support Services
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