Seagate ST31500341AS 1.5TB

Well, so far the 1.5 TB Seagate is running just fine, I have about 60 hours on the drive an no reallocated sectors yet. It is a CC1H firmware build with a build code of TK.

I am curious if there are a significant number of people who run these drives without issue and that this might be a hardware build issue for a specific production line or some such.

Still not trusting the drive, just doing testing before shifting to the old Seagate 750's I have already, (have 7 drives but one is a 7200.11 series which I would probably not plan to use).

If the WD 2TB drives work well I may go to them for my backup media as my current plan is to use new drives for backup media and then migrate them to the raid when I need more space and the 4TB drives are available. That way the backup drives are always the "freshest" drives I own.

Just providing some feedback for others looking at these drives. Note that this is a single drive running in a PRO, if there is any reason that the raid would make the problem worse I don't know.

bdl99 wrote:

What I find interesting is there appears to be two issues: 1) Drive quality - As far as I know the firmware updates have nothing to do with reallocated sectors, but of course that is a guess because Seagate aren't really telling us what they are fixing 2) Firmware issues, Drives freezing, Bricked drives etc Interestingly, my three drives with SD firmware have had zero issues to-date but I am seeing reallocated sectors on my one CC drive. Reading through this thread it appears that there are more reallocated sectors on the CC?? drives can others confirm? It would be interesting to tally how many reallocated sectors people have seen by original firmware and the number of hrs of uptime. So I have: Quantity: 3 Orig Firmware: SD17 (Upgraded to SD1A) Reallocated Sectors: 0 Hrs Uptime: ~1000 hrs each drive Quantity: 1 Orig Firmware: CC1H Reallocated Sectors: 4 Hrs Uptime: ~600 Probably would have been better to collect in a table but I couldn't get it to post correctly.

I'm drawing the same conclusions as well. SD1* seems to be OK as far as sectors, CC1H seems to have the issue.

Which brings me to another thought. Really, how bad ARE these "reallocated sectors?" I've got a bunch (20-30) on a few of the 750GB drives in my NV, still working fine.

If you equate them to being bad blocks, oh NO! we're losing space on the drive, so lets do a calculation.... I'm trying to find exacts, but lets say we have 16k sectors... that's 16kb per sector. Now lets say we have 10 reallocated sectors, that's.... 160kb. Next we account for a 1.5TB drive.... 160kb/KB isn't much.... even a few MB isn't much

I know it sucks but we've been dealing with "bad blocks" since we've had spinning metal disks in computers.

I have 6 of these drives in my Pro. I've purchased them with SD17 and experienced the hanging drive problem, so I upgrade them to SD1A. Yesterday I made another upgrade (to prevent drive loss after power down) and run SD1B now. I've experienced many errors (see below) and lost my confidence to either the drives and also to seagate support (both are extremely poor). Some drives are showing many Spin up retries, reallocated sectors, ATA-Errors, High-Fly Writes, and intermediately also Offline uncorrectables.

Only two out of my six drives are relatively error free.

My worst drive actually shows:

Model: ST31500341AS
Serial: 9VS0B5S5
Firmware: SD1B

SMART Attribute

Spin Up Time 0
Start Stop Count 145
Reallocated Sector Count 19
Power On Hours 2044
Spin Retry Count 0
Power Cycle Count 48
Reported Uncorrect 12
High Fly Writes 57
Airflow Temperature Cel 39
Temperature Celsius 39
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0

ATA Error Count 12

-->> So let's check out the new WD 2TB Drives :-)

jzeimet wrote:

I have 6 of these drives in my Pro. I've purchased them with SD17 and experienced the hanging drive problem, so I upgrade them to SD1A. Yesterday I made another upgrade (to prevent drive loss after power down) and run SD1B now. I've experienced many errors (see below) and lost my confidence to either the drives and also to seagate support (both are extremely poor). Some drives are showing many Spin up retries, reallocated sectors, ATA-Errors, High-Fly Writes, and intermediately also Offline uncorrectables.

Did you see any of the reallocation errors before upgrading to SD1B? My SD17 (upgraded SD1A) drives continue to be error free where my CC1H drive has yet more errors this morning.

bdl99 wrote:
jzeimet wrote: I have 6 of these drives in my Pro. Did you see any of the reallocation errors before upgrading to SD1B?

I have no reallocation errors. All continues to run smoothly.

24 hours in on brand new NV+ build, 2 of my 4 Seagate 1.5 TB drives are seeing sector reallocation errors like everyone else that has chimed in here.

All of my drives came brand new from NewEgg with CC1H firmware. So the Seagate problem remains, even in their latest firmware build which there is no update for.

finally, after 4 bad drives I have 4 good ones. 0 errors so far.

My CC1H drive is still running fine. I keep wondering if it will continue, still not putting any critical data on the drive. May keep experimenting until the new build comes out in a stable form. If the 2TB Western Digitals become available I may give them a try.

Does anyone think that the mutual vibrations of a raid array are any part of this, I only have one in the box at the moment. At least it is a good experiment.

Perhaps I will load a single 2tb Western digital in and see what happens...

BotanyBay wrote:

My CC1H drive is still running fine. I keep wondering if it will continue, still not putting any critical data on the drive. May keep experimenting until the new build comes out in a stable form. If the 2TB Western Digitals become available I may give them a try. Does anyone think that the mutual vibrations of a raid array are any part of this, I only have one in the box at the moment. At least it is a good experiment. Perhaps I will load a single 2tb Western digital in and see what happens...

Yes, just don't yell at them: http://www.youtube.com/watch?v=tDacjrSCeq4

just returning here to say that my four drives in my readnas nv+ are working perfectly fine. its been a few weeks.