HDD GURU FORUMS :: View topic - SanDisk SDSSDH2256G drops out

Smart structure version= 4
ID# FLAG VALUE WORST THRESH RAW DATA ATTRIBUTE NAME
1 0x000e 100 100 0 0x00000000000000 Read Error Rate
5 0x0032 100 100 0 0x00000000000000 Reallocated Sectors Count
9 0x0032 253 100 0 0x0000000000231b Power-On Hours Count
12 0x0032 100 100 0 0x000000000005cc Power Cycle Count
167 0x0032 100 100 0 0x0000000000002c Unknown
168 0x0032 100 100 0 0x0000000000003b Unknown
169 0x0032 100 100 0 0x00000000000192 Unknown
171 0x0032 100 100 0 0x00000000000000 Program Fail Count
172 0x0032 100 100 0 0x00000000000000 Erase Fail Count
173 0x0032 100 100 0 0x00000000000019 Wear Leveller Worst Case Erase Count
174 0x0032 100 100 0 0x000000000001a5 Unexpected Power Loss
184 0x0032 100 100 0 0x00000000000000 End-to-End error
194 0x0022 70 44 0 0x00002c0002001e Temperature
212 0x0032 100 100 0 0x00000000000000 Shock During Write
230 0x0032 100 100 0 0x00000000000053 GMR Head Amplitude
232 0x0033 100 100 4 0x00000000000064 Available Reserved Space
233 0x0032 100 100 0 0x00000000000053 Media Wearout Indicator
241 0x0030 253 253 0 0x000002152e09bf Total LBAs Written
242 0x0030 253 253 0 0x0000083f621853 Total LBAs Read
243 0x0032 100 100 0 0x00000000000000 Unknown

Author:	maximus [ December 14th, 2014, 21:24 ]
Post subject:	SanDisk SDSSDH2256G drops out
I have a SanDisk SDSSDH2256G as a primary drive in my computer for close to 3 years now, and it has dropped out at least 3 times. By dropped out I mean it either locked up Windows or blue screened, and afterwards it was required to change the drive order in bios so that the computer would boot again. So when it dropped out the bios must have lost it. I maintain a full backup so I am not in danger of losing everything, but this is very annoying. Are there any known issues with this drive? It seems more likely to happen under heavy activity, but overheating should not be an issue as it is in a very well ventilated computer.

Author:	maximus [ February 26th, 2016, 22:23 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
I would like to update this post. I am still using this drive, although I think it is time to replace it. The drive works perfectly right up until it has to deal with very large reads and writes (such as cleaning up a virtual machine, which I don't do very often due to this issue). If I can catch it when it locks up, I can power cycle the machine and save myself a bigger headache (if the computer blue screens and reboots the drive is not detected, the bios picks a different drive to try to boot from, and my raid 1 feels compelled to perform a full check which takes 8 hours). So it would seem that the drive goes into device fault. The highest temp I have seen on the drive is 42C during such high activity, which is well within specs. I even moved it in the drive bay to be in front of a fan just to see if that would help, but no luck. But the kicker is that once the drive messes up and I power cycle, I can immediately hammer the drive with reads and writes (perform the same task that killed it and then some) and it will not fault out again. I dare someone to explain why the drive acts as it does, seemingly defying normal logic.

Author:	labtech [ February 27th, 2016, 0:09 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
SMART attributes?

Author:	fzabkar [ February 27th, 2016, 0:25 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
Have you checked for a firmware update? Have you tried to limit the SATA speed? For example, if the drive is attached to a 6Gbps port, try moving it to a 3Gbps port. If the drive supports NCQ, try disabling this feature.

Author:	maximus [ February 27th, 2016, 13:03 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
labtech wrote: SMART attributes? Hmm, check the smart data, why didn't I think of that? So I checked and I don't see anything that indicates an issue. The unexpected power loss count had me wondering for a minute, but then I remembered that I have another drive in this system that doesn't always like to come up at startup so I have to do a power cycle before the OS starts loading which would be the likely cause of that count. ---------------------------------------------------------------------------- (4) SanDisk SDSSDH2256G ---------------------------------------------------------------------------- Model : SanDisk SDSSDH2256G Firmware : X211200 Serial Number : 130504401051 Disk Size : 256.0 GB (8.4/137.4/256.0/256.0) Buffer Size : Unknown Queue Depth : 32 # of Sectors : 500118192 Rotation Rate : ---- (SSD) Interface : Serial ATA Major Version : ATA8-ACS Minor Version : ATA8-ACS version 6 Transfer Mode : SATA/600 \| SATA/600 Power On Hours : 8988 hours Power On Count : 1484 count Host Reads : 1067480426 GB Host Writes : 355836969 GB NAND Writes : 83 GB Temperature : 28 C (82 F) Health Status : Good (100 %) Features : S.M.A.R.T., APM, 48bit LBA, NCQ, TRIM APM Level : 00FEh [ON] AAM Level : ---- -- S.M.A.R.T. -------------------------------------------------------------- ID Cur Wor Thr RawValues(6) Attribute Name 01 100 100 __4 000000000000 Vendor Specific 05 100 100 __0 000000000000 Reallocated Block Count 09 253 100 __0 00000000231C Power On Hours 0C 100 100 __0 0000000005CC Power Cycle Count A7 100 100 __0 00000000002C Max Bad Block/Die A8 100 100 __0 00000000003B Maximum Erase Cycle A9 100 100 __0 000000000192 Total Bad Block AB 100 100 __0 000000000000 Program Fail Count AC 100 100 __0 000000000000 Erase Fail Count AD 100 100 __0 000000000019 Average Erase Cycle AE 100 100 __0 0000000001A5 Unexpected Power Loss Count B8 100 100 __0 000000000000 Vendor Specific C2 _72 _44 __0 002C0002001C Temperature D4 100 100 __0 000000000000 SATA PHY Error E6 100 100 __0 000000000053 Percentage Total P/E Count E8 100 100 __0 000000000064 Spare Block Remaining E9 100 100 __0 000000000053 Total GB Written To NAND F1 253 253 __0 00021535A429 Total GB Written F2 253 253 __0 00083FA0756A Total GB Read F3 100 100 __0 000000000000 Vendor Specific

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SanDisk SDSSDH2256G drops out http://forum.hddguru.com/viewtopic.php?f=10&t=30153	Page 1 of 2

Author:	maximus [ February 27th, 2016, 13:22 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
fzabkar wrote: Have you checked for a firmware update? Didn't think of that. On the SanDisk site it shows that I am a couple firmware versions behind. But when I installed the SanDisk Dashboard and check the firmware, it says it is up to date. WTF?! Quote: Have you tried to limit the SATA speed? For example, if the drive is attached to a 6Gbps port, try moving it to a 3Gbps port. Not sure if I wan to play around with moving it to a different port. Because I know I will have to go into the bios and adjust which drive it should boot from, and I would bet that my raid 1 will decide it needs to check itself. Quote: If the drive supports NCQ, try disabling this feature. How can I tell if the drive supports it, and how can it be disabled?

Author:	maximus [ February 27th, 2016, 14:14 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
After checking and double checking that I have the correct model (only difference is SanDisk website has a dash in the number and the toolkit doesn't), I have found a manual firmware upgrade option. So if there are more posts on this and I don't respond for a few days, that will likely mean that I nuked the drive and crippled my system

Author:	maximus [ February 27th, 2016, 14:24 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
(sigh) No compatible device found for firmware update. I think it is time to shop for a new SSD, and while I have had good luck with their flash drives, it won't be a SanDisk.

Author:	maximus [ February 27th, 2016, 19:12 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
I broke down and ordered a 500GB Samsung SSD. I needed more space anyway. When I swap it out, I see if I can do some tests on this one to see if I can reproduce the results of getting it to crash. I also ordered a new 4TB WD to replace the 2TB Hitachi that is giving me the other issue of not coming up all the time when first booted (also need more space here too). Quote: F1/F2 should be Total LBAs Written/Read by Host. Believe it or not, the actual SanDisk Dashboard lists the names exactly like CrystalDiskInfo. But the values look like they are limited to 32 bit so they are off and basically useless to even count LBA. FYI this was the output of HDDSuperTool smart data script. I used CrystalDiskInfo because it named the three value 167, 168, and 169. Code: Smart structure version= 4 ID# FLAG VALUE WORST THRESH RAW DATA ATTRIBUTE NAME 1 0x000e 100 100 0 0x00000000000000 Read Error Rate 5 0x0032 100 100 0 0x00000000000000 Reallocated Sectors Count 9 0x0032 253 100 0 0x0000000000231b Power-On Hours Count 12 0x0032 100 100 0 0x000000000005cc Power Cycle Count 167 0x0032 100 100 0 0x0000000000002c Unknown 168 0x0032 100 100 0 0x0000000000003b Unknown 169 0x0032 100 100 0 0x00000000000192 Unknown 171 0x0032 100 100 0 0x00000000000000 Program Fail Count 172 0x0032 100 100 0 0x00000000000000 Erase Fail Count 173 0x0032 100 100 0 0x00000000000019 Wear Leveller Worst Case Erase Count 174 0x0032 100 100 0 0x000000000001a5 Unexpected Power Loss 184 0x0032 100 100 0 0x00000000000000 End-to-End error 194 0x0022 70 44 0 0x00002c0002001e Temperature 212 0x0032 100 100 0 0x00000000000000 Shock During Write 230 0x0032 100 100 0 0x00000000000053 GMR Head Amplitude 232 0x0033 100 100 4 0x00000000000064 Available Reserved Space 233 0x0032 100 100 0 0x00000000000053 Media Wearout Indicator 241 0x0030 253 253 0 0x000002152e09bf Total LBAs Written 242 0x0030 253 253 0 0x0000083f621853 Total LBAs Read 243 0x0032 100 100 0 0x00000000000000 Unknown

Author:	labtech [ February 27th, 2016, 19:35 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
What OS are you using for normal use on the machine? Or is it a dual boot with a Linux based OS?

Author:	maximus [ February 27th, 2016, 19:40 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
labtech wrote: What OS are you using for normal use on the machine? Or is it a dual boot with a Linux based OS? It is a dual boot with Win7 and Linux, but spends almost all of its time in Win7 as that is the host that is running VMWare.

Author:	fzabkar [ February 27th, 2016, 20:00 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
"GMR Head Amplitude" is a HDD attribute, not SSD. It appears to be related to attribute 233. Note that "Wear Leveller Worst Case Erase Count" and "Average Erase Cycle" are not the same thing, so attribute 173/0xAD is being interpreted incorrectly by one of the tools. In short, you can't trust any SMART tool to get it right, not even the manufacturer's.

Author:	maximus [ February 27th, 2016, 20:33 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
fzabkar wrote: In short, you can't trust any SMART tool to get it right, not even the manufacturer's. Yeah, that is for sure. And there is no true accurate full list of smart attributes that can be found anywhere. I did the best I could with the script by comparing as many of the lists that I could find online. And seeing SanDisk's own tool giving inaccurate results is funny in a sad sort of way.

Author:	labtech [ February 28th, 2016, 12:53 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
Not sure what the problem may be. Possible a driver issue in Windows. Seen some people complaining about that in some other forums pertaining to Sandisk. I think upgrading to new disks qnd keeping the old ones for backups sounds like a good plan.

Author:	jeremyb [ March 1st, 2016, 2:37 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
fzabkar wrote: Have you checked for known problems with your SATA controller? I had a few on-board Intel RST RAID 1's that would BSOD all day if I put any serious IOPS on them. The hard drives would check out fine every time in SMART or using diagnostic software on other computers. The chipset was P67, the only solution was to replace the motherboards. I wondered if there was an updated Intel RST BIOS module that would solve the problem however I "assume" the ROM only handles INT13 calls since any heavy lifting seems to occur in windows where the software drivers take over. Intel RAID's really under perform compared to hardware. I'd look into a hardware RAID card from Adaptec or LSI with onboard memory and a dedicated processor. Those are pretty rock solid and start around $300. They're geared towards entry level servers but they can handle IOPS much better than Intel and have optimized read routines to get a little RAID0 performance boost out of RAID1.

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Author:	maximus [ February 28th, 2016, 21:49 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
The old ones will be put to use in another machine for testing. But I would like to know if there is any software that can do hard core read and write tests to a drive, not just benchmarking but something that will run as long as you tell it to and just hammer the drive. More of a burn in test. I want to torture this SanDisk drive so I can understand to what level I can trust it in another machine. If there isn't anything like that, I guess I will have to write something of my own for it.

Author:	fzabkar [ February 28th, 2016, 22:48 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
Have you checked for known problems with your SATA controller?

Author:	labtech [ February 29th, 2016, 8:38 ]
Post subject:	Re: SanDisk SDSSDH2256G drops out
maximus wrote: The old ones will be put to use in another machine for testing. But I would like to know if there is any software that can do hard core read and write tests to a drive, not just benchmarking but something that will run as long as you tell it to and just hammer the drive. More of a burn in test. I want to torture this SanDisk drive so I can understand to what level I can trust it in another machine. If there isn't anything like that, I guess I will have to write something of my own for it. Not sure hammering a SSD is a really good idea. The more writing to it, the less life NAND will have.