Got my ReadyNAS ultra 4 for about 2 weeks now and I must say i'm pretty happy so far 😄 Just did a couple of read and write tests and thought i'd share them with the community 🙂
At first I did a couple of drag and drop tests from my Mac Mini and ReadyNAS and vice versa. The Mac Mini is connected over GE and the ReadyNAS is only connected via 1 GE link. On both the read from NAS and write from NAS i got about 50 MB/s
Then I tried it using a RAMDISK on the Mac Mini thinking that the built in HDD could be a bottleneck for testing and what i found was incredible. On the read test I now got 116.1MB/s with peaks of over 126.6MB/s and on the write tests I got 48MB/s does that sound about OK? For the read tests i'm pretty much at the max for 1GE link but the on the writes i get about half the speed I got on read. Does that sound about normal?
I'm using 3 Samsung Spinpoint F4 2TB drives in X-RAID 2. Does adding one more disk do anything with the performance? Does it help or hurt it?
On the read test I now got 116.1MB/s with peaks of over 126.6MB/s
Sweet!
vipzz wrote:
on the write tests I got 48MB/s
Performance will always be limited by the slowest bottleneck. As you've found when creating a RAM disk, you can really see that a single non-RAID desktop system has pretty slow disk I/O compared to the ReadyNAS. I suspect that you may be hitting some sort of bottleneck on your Mac Mini. Maybe you need to buy another Utra to test performance! :wink:
So the disk throughput definitely goes up as you add more disks.
However, the iometer speed did not change on my Windows 7 machine. No matter how many drives were installed, I still see 55-60 MB/s of read performance, and 80-83 MB/s of write performance. So there is more investigation needed on that.
