thattallguy201 (![[info]](http://l-stat.livejournal.com/img/userinfo.gif){kind=small} thattallguy201) wrote,@ 2008-04-19 20:09:00 |
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P.S. Performance of Addonics w/ Software RAID vs a RAID NAS
Again, a USB2-connected (through a PCMCIA card) storage tower vs. a dedicated Intel NAS box.
The Addonics tower is using three drives, while the NAS uses 4 drives; both are RAID-5.
The NAS drive has gigabit ethernet but the server only has 100M, so that's a wash. For comparison, from another server to the NAS drive using wired gigabit, not much of an improvement due to the networking:
Update: For completeness' sake, I did the same test from the other server to the shared Addonics Raid, and was surprised:
So the complete matrix:
Not what I expected to see at all.
Again, a USB2-connected (through a PCMCIA card) storage tower vs. a dedicated Intel NAS box.
The Addonics tower is using three drives, while the NAS uses 4 drives; both are RAID-5.
tdb@bow:~$ time dd if=/dev/zero of=/media/AddonicsRaid/zerofile bs=1024 count=1000000
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 198.193 seconds, 5.2 MB/s
real 3m18.889s
user 0m0.632s
sys 0m12.473s
tdb@bow:~$ time dd if=/dev/zero of=/media/NAS/zerofile bs=1024 count=1000000
1000000+0 records in
1000000+0 records out
1024000000 bytes (1.0 GB) copied, 1334.64 seconds, 767 kB/s
real 22m15.187s
user 0m1.176s
sys 0m51.887s
tdb@bow:~$
The NAS drive has gigabit ethernet but the server only has 100M, so that's a wash. For comparison, from another server to the NAS drive using wired gigabit, not much of an improvement due to the networking:
arrow:~ tdb$ time dd if=/dev/zero of=/Volumes/public//zerofile2 bs=1024 count=1000000
1000000+0 records in
1000000+0 records out
1024000000 bytes transferred in 1111.925912 secs (920925 bytes/sec)
real 18m31.995s
user 0m4.679s
sys 0m57.112s
arrow:~ tdb$
Update: For completeness' sake, I did the same test from the other server to the shared Addonics Raid, and was surprised:
arrow:~ tdb$ time dd if=/dev/zero of=/Volumes/AddonicsRaid/zerofile4 bs=1024 count=1000000
1000000+0 records in
1000000+0 records out
1024000000 bytes transferred in 496.690487 secs (2061646 bytes/sec)
real 8m16.797s
user 0m4.571s
sys 0m54.870s
arrow:~ tdb$
So the complete matrix:
| (times in minutes) | w/Software RAID5 w/GB ethernet | |
| BOW, USB to Addonics, 100Mb net | ||
| ARROW, GB ethernet |
Not what I expected to see at all.
