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Aspirant
Posts: 83
Registered: ‎2008-01-04

Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.1.6)

Hi All,

I'm running 2 x 750 GB Seagate drives (as originally supplied on the NV+) one of which is exhibiting drive errors.

The NV+ reports current config as under:

Online, X-RAID, 2 disks, 71% of 688 GB used
Firmware: RAIDiator 4.1.6 [1.00a043]

This started when we moved PST files over to the NV+ to have clients access them online.

However, when indexing these PST files (with Lookout), then the NV+ would lock up and now the log is reporting the HD errors. (Only one disk reporting)

The only way to restart the machine was a forced shutdown, so the logs reflect this (Have not opened that Outlook client, due to the fact that it locks up the NV+, which is why there are no problems since the 17 Feb note in the log):

Fri Feb 17 04:00:07 IST 2012 ATA error count has increased in the last day. Disk 2: Previous count: 1656 Current count: 1677 Growing SMART errors indicate a disk that may fail soon. If the errors continue to increase, you should be prepared to replace the disk.

Thu Feb 16 12:44:03 IST 2012 RAID sync finished on volume C. The volume is now fully redundant.

Thu Feb 16 04:00:05 IST 2012 ATA error count has increased in the last day. Disk 2: Previous count: 0 Current count: 1656 Growing SMART errors indicate a disk that may fail soon. If the errors continue to increase, you should be prepared to replace the disk.
Wed Feb 15 21:44:01 IST 2012 System is up.

Wed Feb 15 21:15:03 IST 2012 RAID sync started on volume C.

Wed Feb 15 21:14:22 IST 2012 Improper shutdown detected. To ensure data integrity, a filesystem check should be performed by rebooting the NAS through Frontview with the volume scan option enabled.

Wed Feb 15 16:42:47 IST 2012 System is up.

Wed Feb 15 16:09:07 IST 2012 RAID sync started on volume C.

Wed Feb 15 16:07:37 IST 2012 Improper shutdown detected. To ensure data integrity, a filesystem check should be performed by rebooting the NAS through Frontview with the volume scan option enabled.

Wed Feb 15 14:05:22 IST 2012 A SATA reset has been performed on one or more of your disks that may have affected the RAID parity integrity. It is recommended that you perform a RAID volume resync from the RAID Settings tab ( accessible in the Volumes page => Volume tab in FrontView ). The resync process will run in the background, and you can continue to use the ReadyNAS in the meantime.

Wed Feb 15 14:05:07 IST 2012 Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon.


If we are currently on X-RAID, then I could just slip in another disk and it should become redundant, allowing me to remove the one bad disk - or do I need to add 2 more disks?

However, I just purchased 2 Western Digital 2 GB disks, which this firmware (4.1.6) might not be able to handle, right?

I know I should do a backup before updating firmware, so need to know whether the NV+ would recognize the 2 TB Western Digital Caviar Blacks (WD2002FAEX) as they are?

Thanks for any feedback on this!
Aspirant
Posts: 412
Registered: ‎2010-10-12

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

WD2002FAEX HDD is compatible with NV+
your 2nd drive seems to be in bad condition,you might need to do these things:
--remove bad disk 2
--power on your device
--hot add a brand new disk once system is up and data is verified
--wait resync job until it is finished
--hot add another one new disk

By default, Xraid mode with 2 disks is actually raid 1 mode,when you hot plug one more disk then it will change to raid 5 mode automatically.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

de niro wrote:
WD2002FAEX HDD is compatible with NV+
your 2nd drive seems to be in bad condition,you might need to do these things:
--remove bad disk 2
--power on your device
--hot add a brand new disk once system is up and data is verified
--wait resync job until it is finished
--hot add another one new disk

By default, Xraid mode with 2 disks is actually raid 1 mode,when you hot plug one more disk then it will change to raid 5 mode automatically.

Would I have to format one of the new WD Blacks before placing inside the NV+?

If it mirrors, then only 750 GB (or 688GB) would be used out of the 2 TB?

Also, I'm not sure that 4.1.6 can handle the 2 TB disks, correct? Can anyone confirm?
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

The NAS will format the disk. Hot-add (add while NAS is on) as suggested.

Yes X-RAID uses the capacity of the smallest disk.

For 2TB disks you should be running RAIDiator 4.1.7 or later.

Also if your 2TB disk is 4k sector you will want to do a backup followed by a factory reset. See Why you might want to factory reset a Sparc ReadyNAS
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

Can you update the firmware on an NV+ without a disk in place?

Should I remove the failed disk, then update the firmware, as I think the backup will fail in any case, as this PST file appears to be the problem - I was just trying to copy it off the file server and it again locked up the NV+.

Is it because Disk 2 is the one that is failing?

Should I remove Disk 2 and try copying that particular PST file to see if a problem occurs?

Any ideas on which disk is being accessed on the NV+ if they are redundant?
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

SuperFlyBoy wrote:
Can you update the firmware on an NV+ without a disk in place?

Possible, but last resort to update the firmware.
SuperFlyBoy wrote:

Should I remove the failed disk, then update the firmware, as I think the backup will fail in any case, as this PST file appears to be the problem - I was just trying to copy it off the file server and it again locked up the NV+.

That is an option
SuperFlyBoy wrote:

Is it because Disk 2 is the one that is failing?

If a disk is failing it can cause all kinds of problems.
SuperFlyBoy wrote:

Should I remove Disk 2 and try copying that particular PST file to see if a problem occurs?

Yes.
SuperFlyBoy wrote:

Any ideas on which disk is being accessed on the NV+ if they are redundant?

All of them.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

Okay, hot-pulled out the failing disk, second light slot where it was earlier blinking yellow.

Put in the WD2 TB, was recognized, formatted, and now shows x-raid as well, but it is not showing as redundant.

Should I have placed it into the 2nd slot where the Seagate was?

(FIrmware not updated quite yet - wanted a redundant disk first)
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

Yes, you should have put the replacement disk in the slot where the failed disk was.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
Yes, you should have put the replacement disk in the slot where the failed disk was.

Okay, I have another - can I place it in there, or swap Disk 3 (the current WD 2 TB) into Slot 2?
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

You could try placing your additional 2TB disk in slot 2.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
You could try placing your additional 2TB disk in slot 2.

Hot pull okay then? TIA!
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

I said to add your extra disk, I think.

Actually what I would recommend you do is ensure you have a good backup, then remove the 2TB disk from the NAS, update to the latest firmware and then do a factory default (http://www.readynas.com/kb/faq/boot/how_do_i_use_the_boot_menu) with just your 2TB disks in the NAS.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
I said to add your extra disk, I think.

Actually what I would recommend you do is ensure you have a good backup, then remove the 2TB disk from the NAS, update to the latest firmware and then do a factory default (http://www.readynas.com/kb/faq/boot/how_do_i_use_the_boot_menu) with just your 2TB disks in the NAS.

Well, just took the other spare WD 2TB disks, put it in an external HD USB enclosure, formatted it with my Win7 laptop, hooked it up to the front USB port, configured a backup job for the C drive and let it rip.

Getting errors like this (also HD enclosure light went red, disk hot):

cp: preserving permissions for '/USB_HDD_1/./Company7/IMAGE (2).PDF': Operation not supported
cp: preserving permissions for '/USB_HDD_1/./Company7/Invoice Nos new.xls': Operation not supported


Therefore, the backup failed.

(Now checking disk (brand-new) for errors on the Win7 laptop - this disk running quite hot, maybe I should use WD Greens instead?)
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

I took the risk of updating with the one primary 750GB disk and it went successfully.

I cannot say the same about the WD Blacks - they seem to be running *very* hot - especially the one which failed the backup, but a SpeedFan analysis of the drive did not show any problems.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

I just reformatted the WD 2TB in Slot3 as it was giving substantial errors with the NV+, and reinstalled it into Slot2, with the new firmware in place.

It is now doing an expandable X-RAID intialization, which is great!

The down aspect of this is that the NV+ probably fried the other WD Black 2TB (brandy-new too!) and this is why it's running hot.

Could be a problem with the USB SATA enclosure?? Shows a date of 2007...

Would WD give me a new drive under their guarantee if it's running hot (but drive is accessible?)
Guru
Posts: 29,335
Registered: ‎2015-07-16

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

SuperFlyBoy wrote:
Would WD give me a new drive under their guarantee if it's running hot (but drive is accessible?)
Not sure, but if they do you would get a refurbished replacement. If you think the drive is malfunctioning, it might be better to return it to the seller. Amazon for instance will replace with no questions asked.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

StephenB wrote:
Not sure, but if they do you would get a refurbished replacement. If you think the drive is malfunctioning, it might be better to return it to the seller. Amazon for instance will replace with no questions asked.

Unfortunately, I didn't buy it in the US (as I would usually do - due to the urgent need of replacing the 750GB drive showing errors), so therefore went locally outside the US. (for even more $$!)

Will have to explore the option with the local distributor here in India...not sure anything will result from it though!
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
Yes X-RAID uses the capacity of the smallest disk.

Yes, I show this right now:

RAID Configuration
Configuration: X-RAID (Expandable RAID), 2 disks
Status: Redundant
RAID Disks:
Ch 1 : Seagate ST3750640NS [698 GB] 694 GB allocated
Ch 2 : WDC WD2002FAEX-007BA0 [1862 GB] 694 GB allocated


The question would then be, how do I expand the capacity of the larger drives?

If I add more disks of 2TB, will they start to use the full capacity of the 2TB drives?

I gather I should do the backup of the data and then reset the unit - is that the only option?

mdgm wrote:
For 2TB disks you should be running RAIDiator 4.1.7 or later.

Also if your 2TB disk is 4k sector you will want to do a backup followed by a factory reset.

Should one be using a disk formatted with 4k sectors? Is that the recommended method?
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

SuperFlyBoy wrote:

The question would then be, how do I expand the capacity of the larger drives?

Replace all the lower capacity disks with 2TB disks.
SuperFlyBoy wrote:

If I add more disks of 2TB, will they start to use the full capacity of the 2TB drives?

Only if all the disks installed are 2TB disks.
SuperFlyBoy wrote:

I gather I should do the backup of the data and then reset the unit - is that the only option?

To get 4k sector partition alignment, yes.
SuperFlyBoy wrote:

mdgm wrote:
For 2TB disks you should be running RAIDiator 4.1.7 or later.

Also if your 2TB disk is 4k sector you will want to do a backup followed by a factory reset.

Should one be using a disk formatted with 4k sectors? Is that the recommended method?

Disks either use 4k sectors or 512-byte sectors. If the partitions are aligned for 512-byte sectors but not for 4k sectors you will have poor write performance if you use any 4k sector disks. So if you choose any 4k sector disks you will need to make sure you are running 4.1.7 or later, backup your data and do a factory reset.

Btw if you download your logs (Status > Logs > Download all logs), extract the zip contents and take a look at volume.log what is the block size?
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
Btw if you download your logs (Status > Logs > Download all logs), extract the zip contents and take a look at volume.log what is the block size?

As per the logs:

Block size: 16384
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

Good. That's a separate issue I was wondering about.

So it's just the 4k sector partition alignment that needs to be considered.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

mdgm wrote:
Good. That's a separate issue I was wondering about.

So it's just the 4k sector partition alignment that needs to be considered.

Sorry for being dense - but doesn't this mean that the block size is 16k, rather than 4k or 512 bytes?
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

The block size of the volume is a completely different issue to the partition alignment of the partitions on your drives.
Aspirant
Posts: 83
Registered: ‎2008-01-04

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

Partition log:

Disk /dev/hdc doesn't contain a valid partition table

Disk /dev/hdc: 750.1 GB, 750145888256 bytes
255 heads, 63 sectors/track, 91200 cylinders, total 1465128688 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000

Disk /dev/hde: 750.1 GB, 750145888256 bytes
255 heads, 63 sectors/track, 91200 cylinders, total 1465128688 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/hde1 2 4096001 2048000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/hde2 4096002 4608001 256000 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/hde3 4608002 1465112305 730252152 5 Extended
/dev/hde5 4608003 1465112305 730252151+ 8e Linux LVM
NETGEAR Moderator
Posts: 44,976
Registered: ‎2011-06-07

Re: Hardware Errors on Mirrored 750GB Seagate Disk on NV+(4.

As I suspected disks are not 4k sector partition aligned.
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