Help Me Choose: RAID
RAID or Redundant Array of Independent (or Inexpensive) Disks, is a way of storing data on many independent physical disks for the purpose of enhanced performance and/or fault tolerance.
There are several different RAID types or levels that determine how the data is stored. Each RAID level has specific data protection and system performance characteristics. The following are commonly used RAID levels:
PERC S100: Entry RAID, ideal for Windows® customers who want to use up to four SATA HDD or SSD devices in a cabled configuration and want a no-cost RAID option for RAID 0, 1, 5 and 10.
PERC S300: Value RAID, ideal for Windows customers who want to use up to eight SAS or SATA HDD’s in a cabled or hot-plug configuration and want an affordable RAID option for RAID 5 and 10.
SAS 6/IR: Value RAID controller required for customers who use Linux® OS or any virtualization OS (Hyper-V™, VMware® ESX, XenServer™) and require RAID 0, 1 or SAS non-RAID configuration.
Entry (SATA) SW RAID
|OS Support: Windows only. No Virtualization OS Support. Up to 4 drives — SATA HDD or SSD cabled hard drives configurations only. RAID levels: 0, 1, 5, 10|
Value (SAS/SATA) SW RAID
|OS Support: Windows only. No Virtualization OS Support. Up to 8 drives — SAS or SATA HDD cabled or hot-plug hard drives. RAID levels: 0, 1, 5, 10|
Value (SAS/SATA) HW RAID
|OS Support: Windows, Linux and Virtualization OS support. Up to 8 drives — SAS or SATA HDD cabled or hot-plug hard drives. RAID levels: 0, 1|
Premium (SAS/SATA) HW RAID
|OS Support: Windows, Linux and Virtualization OS support. Up to 16 drives — SAS HDD/SSD or SATA HDD/SSD cabled or hot-plug hard drives. With battery-backed write cache. RAID levels: 0, 1, 10, 5, 50, 6, 60|
Advantages of RAID
Depending on how you implement RAID, the benefits include one or both of the following: