Originally Posted by squidman
anyone with experience/views on seagate vs WD 4 tb drives? Still looking to populate the last 4 sata ports on the bottom of the board with 4x4tb hdd's...but am very leary of seagate at the moment. Looking at the WD Red series (the cheaper non-enterprise ones), and willing to pay the 100 bucks extra after last catastrophic seagate failure. Basically in raid 10 or 1+0 config. Have never had a problem with WD green either apart from one DOA (prbly shipping damage), which are quite a bit cheaper. Any thoughts/suggestions? Getting a bit paranoid here (thus raid 10 instead of raid 5).
I agree... most peeps seem to favor Westrern Digital slightly over Seagate these days. But I have no clue how to measure. It's mostly hearsay and seems more like luck of the draw to me. I think that if you purchase a decent drive from either you up your chances. I've bought 11 drives in the past year and they have either been Seagate Barracuda, Barracuda XT, WD Black, or WD Green.
On my workstation I have 4x 2TB Seagate Baracuda XTs in RAID 10 (total yield 3.6GB). They're controlled by an Adaptec 6805e card. The purpose of the RAID is storage of critical school & life files and for use as a rendering target... (so RAID 1+0). I did make sure that this Seagate Barracuda XT model was compatible with the card; but I was (and still am) a little paranoid that they weren't enterprise level drives
with Error Recovery Control
(ERC). Western digital calls it "Time-Limited Error Recovery"
(TLER). Anyway, lots of people take their chances just like me because the higher cost of enterprise drives gets multiplied further in RAID. So far so good... the combination has performed flawlessly for me.
we shall see if(when) some bad sectors start cropping up (see "Consumer drives in RAID..." below)Mitigating risk is important...
All that said... I did make sure that my RAID had an identical 5th drive to set as a global hotspare. It automatically kicks in should there be a problem with one of the other 4. But that is not all. I would never set up a storage system for important files (RAIDed or not) that doesn't also have a solid backup scheme... I use Windows Backup to back up my important data plus system images. It goes off nightly and I alternate full and incremental compressed BUs between two 3TB WD greens. They pop into my front hot-swap bays so I can easily cycle them offsite. I also have a 2.5" laptop HDD fitted in an Icy Dock hotswap bay that's reserved for BUs of in-progresss projects, using the "FreeFileSync utility to make things quick & easy to BU... and recover quickly if needed.Hard Drives in General...
Hard drives may have improved somewhat over the years; but because the immense capacity, the MTBF/drive is probably increasing. The bigger the drive, the more chance there is of having a media failure somewhere. The more you can store, the more you can lose. It's amaziing how easily one can "put all his/her eggs into one (fragile) basket" these days! That's why I compromised with 2GB drives.Consumer drives in RAID...
Not having ERC or TLER drives can mess with the RAID's fault tolerance schemes when little read/write problems start to "surface" due to bad sectors. Modern consumer drives are built to respond by flagging the sectors as bad and moving on to another area of the disk. But if this happens during a write to the RAID, it doesn't communicate to the RAID controller that it is doing so. And if this takes too long, the RAID controller could simply see the drive as being unresponsive and assume that it has failed. It will then try to rebuild the array from parity data. With no hotspare, it does so with remaining disks. And if there is another similar failure on another drive during the array rebuild, it could be catastophic. With an ERC drive that has some bad sectors, it will work with the controller to send the data elsewhere before taking the time to flag the sectors... so the drive & the RAID stays in normal operation. Because of the complex parity striping I would never do a RAID 5 without ERC drives. I probably would never find a reason to do RAID 5 actually.
Originally Posted by squidman
...wow wish I had 7 titans too!
But what would you
do with 7 functioning Titans? Assuming you can get them all working... Beaker7 has a Red Rocket card so I assume he's into 444 4k video. But what video application can use that many CUDA cores? Davinci Resolve? Unless you hack them, you can't use the workstation quality drivers to get both screaming and precise
It's a mystery I am staying tuned for. For me, having 7 Titans would give me the ability to say, "I have 7 Titans"... haha
BTEdited by BlackenedTush - 9/8/13 at 12:56am