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WD Green drives work well with raid? - Page 2

post #11 of 12
Quote:
Originally Posted by parityboy;12569867 
The Western Digital Caviar Green drives are not advised to be used in hardware or firmware RAID. The issue is not over head parking as such (the drive will do that anyway) but instead it's the drives response time when asked to wake up - it can take too long, causing the RAID controller to drop the drive.

Additionally, this behaviour will be repeated if the drive goes into deep recovery mode, and since TLER cannot be set on these drives to avoid a 30 second deep recovery, they have every chance of dropping out of the array.

This, if you can't turn on the TLER with these drives, they would probably not be advisable for a RAID array containing important data. The RE drives do not have this problem, but carry a price tag.

I have 3 non RE WD drives in RAID0 for ~1 year now without issues, but I also have absolutely no important data on the array.

Does anyone know failure rates in an array for the non TLER drives?
    
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CPUMotherboardGraphicsRAM
Phenom II X3 720 @ 3.5 (1.39v) Gigabyte GA-MA790XT-UD4P ASUS 5850 @ 880/1180 (1.118v) 4gb 1333mhz G.Skill DDR3 
Hard DriveHard DriveHard DriveHard Drive
64gb Crucial M4 SSD 3x 250gb WD2500JD - RAID0 1tb WD1001FALS 1tb WD10EARS 
Optical DriveCoolingOSMonitor
Pioneer DLDVD/CDRW Arctic Freezer Pro 64 Win 7 64bit Ultimate E2305 LG 23" LED 
KeyboardPowerCaseMouse
Filco Majestouch II Ninja Tenkeyless Fortron BlueStorm II 500w CM 690II Advanced Razer DeathAdder 
Mouse PadAudioAudio
generic Echo Miamidi PCI M-Audio BX5a Studio Monitors 
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post #12 of 12
Hi,

There are no issues with the WDC green HDs in a complex RAID setup, even with this TLER feature switched off.

I've been running a 6TB RAID 5 set for the last 8 months with no (zero) errors or warnings reported from my RAID card (RR 2322). It gets used quite a lot (read & write) for streaming video and archive storage, and currently its got about 2.8TB free.

Before that I had a 4TB RAID 0 and again with no RAID errors, until my old external HD enclosure failed on on of the HD slots, and the RAID 0 set was un-recoverable.

People read too much into the TLER feature, and reading is about as much as some people have done. You need to hear from someone who has tried to used the WDC green HDs in a RAID and have encountered problems, and problems that can be attributed to TLER.

I use my RAID for storage of important data, I have never had any issues over the past few years so there is nothing to suggest these HDs are not up-to the job.

They are quite & cool as WDC market these drives as.
They peak at 170MBPS, which is good for most uses.
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