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Failed HD in RAID 5 setup

post #1 of 5
Thread Starter 
This is just a FYI, just in case someone is searching how long it would take to rebuild after a HD failure

I'm running a RocketRAID 2722 RocketRAID 2722 with eight external HDs housed in two IcyDock eSATA enclosures (the enclosures I have are no longer made, mine have four eSATA ports) and I've run this setup for more than 6 years.

One enclosure with four Western Digital WD30EFRX (3tb red NAS disks) suffered a single disk failure. I tried to recover the failed disk but with no luck. The warranty ran out in 2015 so this morning a new disk arrived and was swapped.

The Raid card automatically identified the hot swap and started to rebuild the RAID 5 set, that has a total of 9tb of usable storage with around 5.7tb used across two partitions. To rebuild the complete RAID set took approx 6 1/2 hours with the RAID card driver taking no more than 2.5% CPU during the process on my i7-4930K.

I suspect the reason for the fault was the cleaner being a little too fast with the vacuum cleaner, so now looking to someway to locate the enclosures in a safer location.
post #2 of 5
I REALLY hope you have a backup of your RAID. If a drive fails I have seen RAIDs not come back.


It is possible the drive didn't like the vibration from the vacuum and became unstable. Either way, make sure you have a backup. Honestly, if a drive drops from a RAID it generally means something more is going on and I wouldn't trust it.



Let me reiterate here - I REALLY hope you have a backup of your RAID. RAID is not a backup.
 
Gsvlip Dudyrm
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Oda'maksv
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Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
CPUMotherboardGraphicsRAM
3770k @ 4.5 1.312 load Zotac Z77 ITX Wifi GTX 1070 Gaming 2126/2249 w/ Hybrid cooler TridentX 16GB 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
OSMonitorKeyboardPower
Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
CPURAMHard DriveHard Drive
C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
OSMonitorKeyboardMouse
OS X 10.0 1280x800 Built-in Trackpad 
Audio
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post #3 of 5
Thread Starter 
I have a 24tb RAID 5 NAS located elsewhere on Ethernat, so no issues with sensitive data.

Over the years I've had a few hard disks fail and my RocketRAID 2722 has never failed to rebuild or fix the raid set. So no real drama when the buzzer sounded and I worked out where it was coming from rolleyes.gif

A very reliable RAID card, always recommend them these days. The card web GUI is very clear and easy to use. I actually have a new spare in the box just in-case.
post #4 of 5
If you don't ever ever ever want to have a drive fail. Have them all stacked with air intake 80-120mm blowing directly over them all at 7 to 12 volts continuous. Never to ever exceed 39C on any one drive.
Edited by chris89 - 4/16/17 at 1:55pm
post #5 of 5
I've had this headache before on a couple drives that I absolutely needed to retain the data from.

I bought a RAID card plugged them into the raid card and it magically repaired it, I wouldn't believe it worked.
I don't remember which RAID card I bought but it wasn't an expensive one, I probably spent $50 or less on it, should've just tried it before running an array of troubleshooting steps that could've made the problem irreparable!
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