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41 bad blocks on 2TB RAID0
- Thread starter dubaimac
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Agreed. Back up your data now if haven't already. Here's to also hoping that your purchase date is just under a year and you can RMA the drive to WD.
Back up your data NOW while you still can and RMA the drive to WD. Caviar Black drives have 5-year warranties.
The drive sounds like it's going bad, it's probably going to die soon and you will be unable to even mount it...so backup your data as quick as you can and replace the drive!
Thanks for the help guys, I have it all backed up with crashplan, but I'm doing a CCC clone now, and have just ordered two 2TB caviar Blacks at 169 USD each, so I will upgrade my storage as well.
One question though, since my HOME folder is located on this RAID, as my system disk is a 50GB OWC SSD, will my machine start up alright without the home folder and all the apps?
I suppose I will have to install CCC on the SSD then take the clone from the remote server and copy it across, is this correct?
One question though, since my HOME folder is located on this RAID, as my system disk is a 50GB OWC SSD, will my machine start up alright without the home folder and all the apps?
I suppose I will have to install CCC on the SSD then take the clone from the remote server and copy it across, is this correct?
wow, so much FUD! Do you know, did your drive come with any bad sectors? I know, back in the day, my 4gb HDD had 21 bad sectors, and it worked fine - and kept working fine for years. double that in over 100x the space doesn't seem like a reason to freak out to me...
Modern drives have the ability to remap themselves (self-recovery).
It's a good idea to scan new disks before they're setup with RAID or used as a single disk (before you store data as well), in order to establish a baseline, and make sure any damage that may have occured during shipping is remapped.
This is why I like running a base line scan in the beginning. Assuming the disks had few bad sectors when recieved, it shouldn't be full at ~1 year old @ a count of 41.
That said, the disks do need to be replaced.
Very good idea. I like running a scan, but also running a multiple pass erase on the drives. This way, the drive is able to find and relocate sectors about to fail early on.
One thing I miss about the old SCSI drives was how they responded to the format command. When the drives were told to format themselves, they cleared the relocation table, marked the relocated sectors as bad, and made a read/write test of all working sectors to make sure. This way, the relocation table was ready for another round of newly grown defects to be moved.
I don't use OS X often, and am used to using software tools under Windows or Linux that would be able to be used instead of the multiple erase pass technique.
How important/necessary is this under OS X to accomplish the goal of remapping bad sectors on a new disk vs. 3rd party software?
I know what you mean. SATA's not that way, but I'm more used to 3rd party software under Windows and Linux (does clear the table as I understand it).
But what I've noticed lately, is disk quality has declined (i.e. ~ 10 - 13% failure rates out of the bag, as most disks are bought in OEM form). Those that function, may not have good platters to begin with (i.e. too many bad sectors, but pass - just barely - but are shipped). Shipping of course can increase the bad sector count, but that's usually due to retailer packaging as I see it (i.e. disks to retailer come in decent protective packaging, but that used to send it to end users suck, such as paper, minimal bubble wrap,...). And shippers like UPS abuse what they're tasked with shipping (I used to work there during college, and I've some stories..., not just people, but equipment damage, which is even more frequent if memory serves correctly).
My Seagate Barracuda 7200.12 500 GB also have 7 reallocated bad sectors.
I've replaced 3 dead Seagate Barracuda's 7200.12 1TB in my server this year ! They were having thousands of reallocated sectors.
Seagate is making terrible drives these days.
I've replaced 3 dead Seagate Barracuda's 7200.12 1TB in my server this year ! They were having thousands of reallocated sectors.
Seagate is making terrible drives these days.
I have a couple of 7200.11 1TB drives I use in a software RAID-0 array as my FCP scratch disk. Those ones have been going strong for over a year.
But lately, I've been buying mostly WD Caviar Blacks. They're nice, speedy drives for a somewhat reasonable price.
But lately, I've been buying mostly WD Caviar Blacks. They're nice, speedy drives for a somewhat reasonable price.
Can anyone shed any light on this, am I going to have problems booting without my home folder?
I think he meant if the amount of Bad Blocks continues to increase.
He did say about having problems with the Config.
And yeh I had a seagate Barracuda 7200.12 320 GB HD that nearly failed on me so I send it back