Many people on the forums are shifting to pci-e ssd drives with lots of benefit over the old 4 bay option. I just wondered what people are using these old drive bays for. I am running mine with 3x2tb RAID but they carry a lot of junk
TBH, I have to play around with fastest setup for the RAID. At the moment I have only 2 RAID drives running off the internal SATA, 1 is off the Capricorn Card, and two off the Caldigit Card, idea being to spread the load across interfaces given the slower SATA2 on board, but no idea if the extra overhead of the RAID being run across multiple interfaces is effective or not.
Yup, totally aware of that, but the SATA2 system as a whole on the Mac Pro has a limited max overhead. Been ages since I have looked into it, so don't remember for sure, but something like 600 or 800MB max for memory even if I was to use all SSDs. Given it's 5 drives in the "RAID", and its just striped, it ran quicker offloading some of the drives to the PCI-E cards when I first did some basic tests, but haven't bothered to test different variations of the setup, i.e., 3 on internal ports, one each on the 2 cards, etc etc.Using SATA 2 for your RAID shouldn't impact performance of your RAID since traditional platter based drivers can't come close to saturating the SATA 2 interface.
725 MB/sec max.Yup, totally aware of that, but the SATA2 system as a whole on the Mac Pro has a limited max overhead. Been ages since I have looked into it, so don't remember for sure, but something like 600 or 800MB max for memory even if I was to use all SSDs. Given it's 5 drives in the "RAID", and its just striped, it ran quicker offloading some of the drives to the PCI-E cards when I first did some basic tests, but haven't bothered to test different variations of the setup, i.e., 3 on internal ports, one each on the 2 cards, etc etc.
Just wow! Snob much? The only spinners I see listed on here are all larger than SSDs, so SSDs likely wouldn't suit. And each person with spinners also has several SSDs as it is.hard drives hehe
Bay 1: Samsung 500GB HDD <- Mac OS X 10.11.4 test drive
Bay 2: Samsung 500GB HDD <- Carbon Copy Cloner (CCC) bootable backup of Mac OS X 10.11.4
Bay 3: WD 2TB HDD
Bay 4: WD 2TB HDD
Bay 3+4: Apple Software RAID0 4TB: A CCC back-up disk to be later backing-up (each night) to a cloud back-up service (without NAS accessibility)
Slot 1 - GTX 670 FTW (PC) 4GB Video
Slot 2 - Apricorn SATA DUO x2 Card: 1TB Ss 840 EVO SSD OS X 10.10.5 & 500GB Ss 840 EVO SSD for EFI Windows 8.1 Pro x64
Slot 3 - ATI 2600 HD (Mac EFI) 256MB Video (just for bootscreens/maintenance)
Slot 4 - Caldigit FASTA-6GU3-Pro USB3 and eSATA3 Card
4a. <- eSATA bootable external 1TB (RAID1) CCC Mac OSX 10.10.5 - current OS X - back-up
4b. <- eSATA 2x Ss 840 EVO 500GB (RAID0) external scratch disk for graphics and video applications
4c. Both USB 3.0 connections are empty
4d. Both USB 3.0 connections are empty
Note: all disks are back-upped/cloned to a Synology DS1812+ (8x WD 3TB in SHR) NAS and Cloud back-up!
Cheers