My OS resides on a RAID Array, can I expand the size of the Volume?
Sometimes it is desirable to have the OS and user data both reside on the disk array, either on the same logical drive (one array) or on separate logical drives (two or more arrays). The advantage is that the OS will reside on a redundant drive. To reconstruct a logical drive it must be configured as 1 logical drive on an array. For the case where the disk array is used as the boot device and contains user data, Virtual Sizing can still be used. The key limitation is that NT only allows a FAT boot partition size of 4 gigabytes or less and NTFS limited to the 1024th cylinder of the physical disk, which could be up to 8 GB. As a Solution and a more preferred configuration, the disk array can be re-configured with an array just for the boot partition/OS and another array for user data.

Can I add capacity to my existing array with your drives?
Sure! Depending on your configuration, RAID 0, 1, 5 , this is accomplished in different ways but all require the NetRAID Assistant software. With RAID 5, Add the new physical drive to the adapter by plugging it into an empty hot swap storage slot. Bring up NetRAID Assistant under NT. Select the logical drive and the new physical drive. Then select Logical Drive/Change Config/Add Capacity. This will reconstruct the current RAID 5 array to a 1+ drive RAID 5 array. When reconstruction is complete, the real storage capacity will now be increased. Reconstruction occurs in the background, so the original 1volume will still be available during the reconstruction process. When the reconstruction is completed, enter the OS Disk Administrator. The original drive is still shown and has it's original capacity. You can now select the unpartitioned area, and create a primary partition Format the new partition. OR you can start the disk administration software from your server (Windows Disk Administrator in NT and 2000) and select both the current partition and the free space and "Extend" it to the free space, enlarging the existing OS Logical drive letter to the free space.
With a RAID 1, you need to add at least 2 more drives. Start the NetRAID Assistant. You select the 2 new drives, Create a RAID 1. Then create your logical drive but select spanning of the size. This should create a logical drive of 2 spanned drives with both mirrored.

Can I add this addition capacity to our "D:" existing partition logical volume, it is running out of space?
Definately, Yes.
Though NT does not support logical drive expansion like 2000, the NetRAID software does have the capability to "Online Capacity Expansion" for logical disks(the RAID5 is a logical Disk not to be confised with the OS (NT) logical drive (D: say). See your NetRAID User Guide for more details, or go to our support pages at our site, I think it is listed there also. "Normally, adding capacity requires shutting down the server to reconfigure/restore an existing volume or to add the new storage space as a new volume. Using the Online Capacity Expansion feature allows you to expand an existing logical drive without shutting down the server."
Notes:
-The space will be added as free space on the Logical Disk.
-The Online Capacity Expansion feature is supported only on arrays that contain just one logical Disk each.
- Virtual Sizing must be Enabled on the Logical Disk.
1. Add the new physical drive to the adapter by plugging the additional drive into an empty hot-swap storage slot connected to the adapter.
2. Bring up HP NetRAID Assistant under Windows NT.
3. Select the logical Disk and the new physical drive.
4. Select menus "Logical Drive", then "Change Config", then "Add Capacity".
The logical will rebuild.
If the expanded capacity and the original capacity must share the same drive letter, you must restart Windows NT. Next in NT Disk Administrator, identify the added capacity as an extended partition, and then select the original and new (extended) partition. Use the selection Extend Partition to make the two partitions share the same drive letter (E: for this example). You need to restart Windows NT before any part of E: becomes available again. If you accidentally enter more capacity than is actually available, Windows NT will detect the error upon restarting as it executes a check-disk operation on the extended volume.
The additional capacity will have a different drive letter than the original logical drive. If the expanded capacity and the original capacity must share the same drive letter, you must restart the HP NetServer. For more information about drive letters, see "Expanding Capacity Online under Windows NT" later in this section.

Are there Drivers for Windows 2000 for my Classic NetRAID (D4943A) or NetRAID-1 (D4992A) cards?
Can I install Windows 2000 on my Netserver with Classic NetRAID (D4943A) or NetRAID-1 (D4992A) cards?
Sure, but!  These controllers HP never added support for Windows past NT 4.0. However HP did originally test this configuration and it was not reliable. This is why no driver shows up or listed by HP for them. But the issues have become clear to other users, who have found the cards do support the OS. See our Support Article "Installing Windows 2000 on your Classic NetRAID and NetRAID-1"