Rosewill RSV-S5 and it's transferespeeds
- by DoomStone
I have just bought a Rosewill RSV-S5, I have installed 5x1,5Tb Western Digital Green disks in it. After that have I created a Raid5 on them all with the software that followed with the hardware.
Not the raid it self works fine, but it is SLOW, I can only obtain a maximum of 25 MB/s, and if SABnzbd+ is downloading with 5 MB/s is it having a hard time streaming a normal DIVX (700 mb) movie.
Is this normal or is there something wrong?
Edit: should be able to handle 3 Gbps = 384 megabytes / second
Edit 2:
As you can see am I only downloading with 3,76 MB/s and I'm trying to watch V s02e08 (720p), but it is completely unwatchable, as I can see 30 sec, and the it buffers for 20 sec.
Edit: Other information there might be required
I'm running Windows Server 2008 R2, optimized for program performance. Windows is installed on a 60GB SSD. I have a 50 Mb/s internet connection and a 1 Gb/s LAN, all connected with Cat6 Ethernet cables. The MCE is using a Gigabyte EP35C-DS3R motherboard with 2 GB DDR2 ram.
Edit 3: I have used chunk sizes for 128 KB
Edit 4: I found this on newegg
Pros: Enclosure for 5x2TB hard drive
is fine. This is basically a rebranded
San Digital TR5M-B product. For
support Rosewill tells you to contact
San Digital. No direct support from
Silicon Image for the computer raid
card.
Cons: Includes computer Silicon Image
3132 raid card, extremely slow raid 5
write (our tests ~10MB/s). Compare to
regular internal local drive write
30-60MB/s. We basically dumped the
Sil3132 card and replaced with High
Point RocketRaid 622 card for extra
$69.99. Note for RR622, turn off ECRC
(end to end CRC check) for card to
work on IBM xserver. What took 12hrs
to copy now took 2-3hrs. San Digital
realized the problem and has the newer
model TR5M-BP TowerRaid Plus that
comes with High Point RocketRaid 622
card. Rosewill should discontinue this
product and go with TR5M-BP. Could not
get Silicon Image raid management
software to work with complicated
2008R2 server with 10 NICs,
application doesn't know how to talk
to localhost port with all those NICs.
No updates from Silicon Image and
support from San Digital ignored. Gave
up on Sil3132 card. Save yourself from
a lot of headaches, get the RR622 card
too if you are going to buy this
product.
Other Thoughts: The newer model is
TR5M-BP TowerRaid Plus, comes with
High Point RocketRaid 622 raid card
for the PC instead of Silicon Image
Sil3132. According to San Digital,
raid 5 performance for Sil3132 read
80MB/s write 19MB/s, and RR622 read
154MB/s write 149MB/s. Our RR622 tests
gave (8TB raid 5) write ~80-110MB/s
copying 40GB file took 8mins.
So I have now ordered a HighPoint RocketRAID 622 2P ext SATA III and hopes that it will solve my problems.
