Linked by Thom Holwerda on Sun 7th Oct 2007 23:01 UTC
Mac OS X Developers have received from Apple a 'ZFS on Mac OS X Preview 1.1' package, which offers preliminary support for the ZFS file system, originally developed by Sun Microsystems for their Solaris OS. Currently, the Mac OS is based on the HFS+ file system, but leaked screenshots of earlier versions of Leopard showed options for formatting hard drives for ZFS. Reportedly, this preview allows full read and write capabilities with the latest developer build of Mac OS X 10.5 Leopard, Apple's upcoming version of its OS X operating system.
Thread beginning with comment 276991
To read all comments associated with this story, please click here.
I have a ZFS fileserver 1GB RAM
by Kebabbert on Mon 8th Oct 2007 18:45 UTC
Kebabbert
Member since:
2007-07-27

I have a fileserver on a P4@2.4GHz and 1 GB RAM. I use 4 Samsung 500GB discs in a raidZ. It works wonderfully. Though it isnt fast, average transfer rate is like 30MB/sec. It is because it is 128bit and it doesnt really like 32bit P4 CPU. When I upgrade to 64Bit Penryn, I will see dramatic improvements in transfer rate. One guy at Sun, blogged about his dual core AMD 2 GB RAM and he gets ~120MB/sec transfer rate. If you have a slow CPU it can be slow. But the security ZFS gives me is so nice to have. I have never worries anymore. Before I backupped important files to several hard discs, but now I worry until I have it on ZFS raid. Then all my worries disappears. ZFS can make truly wonderful things. Detect faulty power supply in a few hours and automatically corrects the read/write errors the supply causes, etc.

Reply Score: 1

mym6 Member since:
2005-08-26

The hardware you use affects a lot of things as well. Use good hardware SATA cards and hardware NICs and you'll get better perf.

Reply Parent Score: 1

Oliver Member since:
2006-07-15

>One guy at Sun, blogged about his dual core AMD 2 GB RAM and he gets ~120MB/sec transfer rate

Maybe as peak in some laboratory condition, but not in reality. I saw it on a Solaris server and FreeBSD, but such high rates are to some extent nonsense.

Reply Parent Score: 2

Kebabbert Member since:
2007-07-27

>>One guy at Sun, blogged about his dual core AMD 2 GB RAM and he gets ~120MB/sec transfer rate

>Maybe as peak in some laboratory condition, but not >in reality. I saw it on a Solaris server and FreeBSD, >but such high rates are to some extent nonsense.

The Sun X4500 thumper which has dual(?) opterons and 6 SATA cards with 48 discs with 500GB, achieve 640MB/sec read. So, yes, the guy achieved over 100MB/sec. But he had 64bit CPU. There can be dramatic performance increase if you double the number of bits, right? I achieve now, 32bit P4 1GB RAM, 30MB/sec. I cant wait till I get a Penryn which could play in the same ballpark as dual opterons, in terms of performance. I will easily achieve over 100MB/sec then.

Reply Parent Score: 2