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We have a HP MSA 60 attached to a HP DL320 Server. &nbsp; Six 1TB hard drives are in the MSA 60 and configured using Raid 5 and GPT. &nbsp; This leaves 4.5 TB of storage after the Raid 5. &nbsp; &nbsp;The Array is configured and the drive initialized, but when we go to create a new partition on the available space, it will only create as a primary partition. &nbsp;The option for extended (which we would not use) and logical (we would like to use) are grayed out. &nbsp; Why will it only allow us to create the partition as a primary? &nbsp; Is this ok since the array is on the MSA 60 and not the DL320 server which has the OS? &nbsp; &nbsp; 
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We have a HP MSA 60 attached to a HP DL320 Server.   Six 1TB hard drives are in the MSA 60 and configured using Raid 5 and GPT.   This leaves 4.5 TB of storage after the Raid 5.    The Array is configured and the drive initialized, but when we go to create a new partition on the available space, it will only create as a primary partition.  The option for extended (which we would not use) and logical (we would like to use) are grayed out.   Why will it only allow us to create the partition as a primary?   Is this ok since the array is on the MSA 60 and not the DL320 server which has the OS?     

Raid 5 Array on HP MSA Storage Server

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

RAID stands for Redundant Array of Independent Disks.

RAID is data storage technology that allows multiple drives to be used together as a single virtual drive for reasons such as fault tolerance, reliability and performance. 

There are several different levels of RAID that determine how the data is stored and the level of redundancy achieved across the drives.