eSATA RAID for backup?

[Dorkenstein]

Anyone use an externa sata raid backup like this?

http://www.cwol.com/serial-ata/caldigit-s2vr-duo-pci-e.htm

Just curious if its worth it for backup or running things off.

 

[Ruptga]

I can't remember for the life of me where I saw this, but actually firewire 800 has a higher sustained throughput than eSATA

 

[bob4432]

Originally posted by: ADDAvenger
I can't remember for the life of me where I saw this, but actually firewire 800 has a higher sustained throughput than eSATA

esata has the same speed as sata - 150MB/s where 1394b would be 100MB/s

 

[themisfit610]

Right, but the important thing to remember is that all 1394 devices share one channel. With SATA they all have their own channels. Muy importante for RAID

~MiSfit

 

[Dorkenstein]

Is what I posted a good solution or are there better/cheaper ones?

 

[Ruptga]

Originally posted by: bob4432

Originally posted by: ADDAvenger
I can't remember for the life of me where I saw this, but actually firewire 800 has a higher sustained throughput than eSATA

esata has the same speed as sata - 150MB/s where 1394b would be 100MB/s

I know about the theoretical stuff, but I said sustained throughput

 

[bob4432]

Originally posted by: ADDAvenger

Originally posted by: bob4432

Originally posted by: ADDAvenger
I can't remember for the life of me where I saw this, but actually firewire 800 has a higher sustained throughput than eSATA

esata has the same speed as sata - 150MB/s where 1394b would be 100MB/s

I know about the theoretical stuff, but I said sustained throughput

sustained it won't matter for a single hdd since they are below either one or the theoretical limits.

i would think since sata/esata is meant for and designed for hdds drives it would be better, but i could be wrong as i don't know much about the actual electrical issues or any type of overhead. i would think thought that if 1394b was superior it would be the way to connect internal drives and sata would be gone.

 

[RebateMonger]

I've had good results with backup systems using removable SATA drives in the trays from Granitedigital.com For many of my clients, we'll start with two 320GB Seagate SATA drives in removable trays. Clients keep one drive in their server and one drive offsite. Total cost is about $350.

Current capacities for SATA hard drives include 320, 400, 500, and 750GB. 500GB drives are about $250 each right now. Seagate 750GB drives ae $380 apiece. If you need more than 750GB capacity right now, then you'd probably want to use a RAID0 array. But a business would want two of them (one onsite and one offsite), and transporting them regularly would be a bit more effort than a single drive in a tray.

Both SATA and FireWire 800 would have similar transfer rates in real life, since they'd both be limited by the sustained transfer rates of the hard drives. Unfortunately, FireWire 800 seems to have some significant driver issues though. Be TRIPLE-sure that there are "usable" FW800 drivers available for your operating system of choice. "Usable" means that they ACTUALLY give transfer rates somewhere near FW800 advertised speeds.

 

[Dorkenstein]

I'm thinking of actually just starting out with a big seagate drive. Anyone know of a good 5.25" bay cooler interface for SATA? Thanks.