Originally posted by OmniX:
Hi--does anyone know if it is possible to have three SATA drives connected to a single RAID controller configured at RAID level 5?
tx,
ox
Yes. If you spec out a new G5 xServe, then a RAID card is one of the options. The description of the RAID card clearly says that RAID 5 is an option.
"PCI Hardware RAID card
This 64-bit/66 MHz PCI card provides enhanced reliability and performance to Xserve G5's internal Serial ATA (SATA) drives using a hardware RAID controller. Bypassing the on-board hard drive controllers, this card provides three independent 150MBps Serial ATA controllers backed by high-performance RAID processor and 64MB of RAID controller cache with an on-card backup battery.
The PCI Hardware RAID controller provides RAID level 0, 1 and 5 capabilities to the Apple Drive Module bays and is managed by an included command-line management tool. Multiple logical drives can be created, and each logical drive supports different RAID levels, different stripe sizes, and different cache policies. In the case of a drive failure in a protected RAID 1 or 5 configuration, drives can be hot-swapped and the RAID set can be rebuilt on to a new drive online while the server continues to serve data.
Note: RAID levels 0 and 1 require a minimum of 2 Apple Drive modules; RAID level 5 requires 3 Apple Drive modules. Apple recommends drive modules of the same size for each RAID set."
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