I picked up a 1TB single disk MBWE I, and started copying files to it via SMB. It felt abysmally slow compared to my current "NAS" which is a Linux box with a RAID in it.
Anyhow, since I do traffic graphing on my network, I was able to see that the transfer rate for SMB was about 16Mbit/sec writing. That's Mbit, not MByte. Horribly slow, I think.
After hacking ssh on the box, I proceeded to mount the share via NFS to my other server, and copy files that way, using default NFS options. This yielded significantly better performance, around 31Mbit/sec.
I've just adjusted the NFS options slightly, to use nfsvers=3,wsize=65536,rsize=65536, and I'm seeing performance around the 36Mbit/sec mark. Over double what I was getting when using SMB.
All of the above is only write times. I haven't tried to do any amount of reading from the device yet.
I realize that not everyone will want to use NFS, but especially for an initial data dump of ~700G of data, it'll take half the time.
On a completely unrelated note, I noticed that the partition is mounted as a failed RAID 1:
[root@MyBookWorld ~]# mdadm —detail /dev/md3
Version : 00.90.03
Creation Time : Tue Mar 12 17:22:03 2002
Raid Level : raid1
Array Size : 987904 (964.91 MiB 1011.61 MB)
Device Size : 987904 (964.91 MiB 1011.61 MB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 3
Persistence : Superblock is persistent
Update Time : Mon Oct 29 14:36:44 2007
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 3340394f:bec1627c:b3b08f01:7a5d6f66
Events : 0.2778
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
1 0 0 1 removed
I wonder if the extra overhead of "being in a RAID 1" when I only have a single disk is hurting performance. I am tempted to recreate the share partition to be non-raid but I really need to create (yet another) backup of my data first, if I'm going to destroy the current partition.
Has anyone else experimented with any of this?