RAID 0.Originally Posted by Jan Opseth
No redundancy
Developer
RAID 0.
No redundancy
Expert
Another possible nice thing with this, is that you can rent Xserve RAID systems from a number of vendors....
Developer
if you do rent-
Make sure you have enough time to configure the raid. it takes a day or so to change the raid setup!
I like it because really it was almost plugnplay.
Fibre channel cards didnt need configuring, fibre switch didnt need configuring.
Maybe we got lucky.
Member
I know you folks have planty to but do you have the time/"wanto" too
test raid 5? to see any performance drops/or rices?
Can u change stripe sizes on an Xserv Raid?
Regards,
Jan O
Last edited by Jan Opseth; 18-03-2005 at 12:20 AM.
Developer
No change in performance with raid5 - the demo unit arrived as RAID 5- i got reagan to reformat at raid0 - no difference noted.
Only tested at standard definition.
raid setup doesnt matter that much when you arent trying to get 200MB/s out of the XServe RAID.
i think you can change stripe size - it takes days to reinitialise - so we didnt change too much.
Playback at hi-def is processor limited at the moment - ( but might not be if apple released quad computers )
Member
sounds like a great solution for an install. But for road machines I like to keep the unit self contained in its case. The only wires that come out are for power, monitors, keyboard, and video out. The thought of a crew member, LD, or Catalyst Op accidently stomping on a fiber lead scares me.
But I am a chicken!
Tyler
Tyler Roach
Eclipse Creativity, Inc.
Developer
its not fibre - its copper.
its seems a lot easier to configure than scsi.
Developer
Fibre channel cables:
http://www.cselex.com/fibre-channel-cables.htm
Some fibre channel info.
http://www.seagate.com/support/kb/di...e_channel.html
fc switches:Fibre Channel key features include...
Hot-pluggability ? Fibre Channel drives can be installed or removed while the host system is operational, which is crucial in high-end and heavy-use server systems where there is little or no downtime.
ANSI standard compliance for serial port interface ? Fibre Channel does not require special adapters, which can be expensive.
Speed ? In its intended environment, Fibre Channel is the fastest option available.
Cost effectiveness ? Relative to other high-end solutions, Fibre Channel is inexpensive because it does not require special adapters.
Loop resiliency ? Fibre channel provides high data integrity in multiple-drive systems, including Fibre Channel RAID.
Longer cable lengths ? Relative to LVD, Fibre Channel can maintain data integrity through significantly longer cables. This makes configuring multiple devices easier.
http://www.storagesearch.com/fcswitches.html
Developer
Apple xserve cables:
http://www.cselex.com/apple-xserve-cables.htm
You can use fibre optical cables with these devices for long distances - but you dont have to,
the SFP plugs can take optical transceivers.
http://www.apple.com/xserve/raid/fibre_channel.html
For connecting over longer distances Apple?s card accepts long and short haul SFP (Small Form Factor Pluggable) optical transceivers for use with fiber-optic cables that can extend over 500 meters. This is particularly useful for organizations using Xserve RAID to back up or archive critical data.
Expert
How does this all relate to the transactions/second argument?
I am looking for disk solution at the moment beyond my single Raptor content drives and am a little confused now as to what is best. I have gone back through the forums and looked at your drive/codec comparison tables as well as the previous discussions about SATA v. SCSI. This fibre channel discovery seems to conflict with that.
Do I spend the money on internal SCSI drives for my 2 machines or am I better off investing more in something expandable such as xRAID?
I would like to have the ability to play back Hi Def but the maximum number of layers is also important.
Cheers
Toby
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