Buffalo LS-QV4.0TL/R5 NAS LED Blinking Red 6 Times

[JohnG999]

Hi - My unit has gone out and is blinking red 6 times.  I am going to try to replace drive #1.  I have a WD WD10EADS 1TB drive.  Do i have to replace with the old (exactly same) drive, or can I update to a newer version WD SATA drive? Thanks

[davo]

6 times means the boot image is gone, so you need a new TFTP image. If you remove disk1 is the error LED still flashing in the same fashion?

[JohnG999]

Thanks for the reply. 

I removed Disk 1 and it boots up with Error 4 (Red blinking 4 times), a RAID error. 

Edit - performed requested action.

[davo]

Are you sure its not 1 long - 4 short? What does the NAS Navigator say when it is in this state? What RAID mode were you using? Do you have a backup or need the data?

[JohnG999]

Thanks,

1) it appears to be 1 long and three short

2) NAS Navigator says Errors:
E13 - Error has occurred at RAID array 1
E16 - Disk 1 was not found
E23 - Disk 1 is removed from RAID array due to errors
I12 - The RAID array works under degrade node

3) It's in RAID 5

4) I have an old backup and, yes, I need the data

[davo]

Ok, you should be able to access the data so backup it up if necessary, then replace the disk and rebuild the RAID

[JohnG999]

ok, thanks.  I will do this. 

What are the requirements on the replacement drive?  The old drive is not in production anymore.

Will this work? http://www.newegg.com/Product/Product.aspx?Item=N82E16822236342#close

Or is there another suggested drive?

Thanks again!

[davo]

Just use one that has the same specs (size, capacity, RPM and cache), the make does not need to be the same.

[JohnG999]

Got it, thanks.

[JohnG999]

I had 4 of these: http://www.amazon.com/Western-Digital-Intellipower-Desktop-WD10EADS/dp/B001IEZX3G
WD Caviar SATA 2, 32 MB cache, 5400, 3GB/sec drives - when reading online, they seem to have a high failure rate (this is my second).

This is the replacement version: http://www.amazon.com/Blue-Desktop-Hard-Disk-Drive/dp/B013HNYVLA
WD Blue SATA 3, 64MB cache, 5400 rpm, 6GB/sec

Will the Buffalo LS care about larger cache and higher transfer rate, or will drive be backwards compatible?

The replacement drive is more reliable AND cheaper - but that's only helpful if it will work.

[JohnG999]

Update - I bought a 1TB WD Red NAS HDD and have installed it in the LS Quad. 

The Quad manual states that, when RAID 5, array should automatically rebuild when a blank HDD is added, but that's not happening.  If I follow the manual instructions to rebuild via the Web Interface (Disk Management / RAID Setup / Check the box by the new drive / Click on "Restructure RAID Array") will this damage my existing data?

[davo]

Update - I bought a 1TB WD Red NAS HDD and have installed it in the LS Quad. 

The Quad manual states that, when RAID 5, array should automatically rebuild when a blank HDD is added, but that's not happening.  If I follow the manual instructions to rebuild via the Web Interface (Disk Management / RAID Setup / Check the box by the new drive / Click on "Restructure RAID Array") will this damage my existing data?

The RAID will not automatically rebuild itself, you need to go to System - Storage - Array1 -> Rebuild RAID. This does not effect the data on the remaining disks but ensure you have a backup.

The rebuild process will take around a day to complete.