i need to mount 4 hdd that were from a pegsysR4 raid

Mounting hard drives from a RAID array, such as the Pegsys R4, can be complex, especially if you want to access the data on those drives. Here’s a general outline of steps you might take to mount the drives:

### 1. **Identify the RAID Configuration**
   - Determine the RAID configuration used (RAID 0, RAID 1, RAID 5, etc.).
   - Understand that RAID configurations may use striping, mirroring, or parity, affecting how the data is stored on the drives.

### 2. **Backup Important Data**
   - It’s vital to back up any critical data before attempting to access or manipulate RAID drives, as the process can lead to data loss if mistakes are made.

### 3. **Connections**
   - Physically connect the hard drives to your computer. You may need a SATA interface or an external USB enclosure if you're using a workstation or laptop that doesn’t support multiple drives.
   - Ensure that the drives are properly powered.

### 4. **Install the Necessary Software**
   - Depending on the operating system, you may need specific tools to work with RAID configurations.
   - For Linux, tools like `mdadm` or `lvm` (Logical Volume Manager) can help manage RAID setups.
   - On Windows, you might consider third-party software like R-Studio, Recuva, EaseUS Data Recovery Wizard, or similar.

### 5. **Accessing RAID Array**
   - **Linux:**
     - Use `mdadm` to assemble the RAID array. For example:
       ```bash
       sudo mdadm --assemble --force /dev/md0 /dev/sdX1 /dev/sdY1 /dev/sdZ1 /dev/sdW1
       ```
       Replace `/dev/sdX1`, etc., with your actual device identifiers.
     - After assembling, you can mount it:
       ```bash
       sudo mount /dev/md0 /mnt/raid
       ```
   - **Windows:**
     - Open Disk Management to see if the RAID is recognized.
     - If the drives are not in a recognizable format, use the recovery software mentioned above, and follow the instructions to recover the data.

### 6. **Mounting the Drives**
   - Once the RAID array is assembled, mount it to a directory if you’re on Linux.
   - If you're on Windows, follow standard mounting procedures in File Explorer or Recovery Software.

### 7. **Exploring Data**
   - Once mounted, you can explore the data normally through your file manager (Windows Explorer, Nautilus in Linux, etc.).

### Important Notes:
- **Data Recovery**: If the RAID array is degraded or you suspect data corruption, consult a data recovery professional before attempting to access data.
- **Avoid Initialization**: Do not initialize or format the drives, as this can lead to permanent data loss.
- **Documentation**: Always refer to the manufacturer’s manual or documentation for specific instructions related to the Pegsys R4 RAID setup.

If you can provide more details about your operating system and what the RAID configuration was (RAID level), I can offer more specific guidance!