[root@freenas-esxi6a] /mnt/datazilla/recovery-recovery-CYA-clone# zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
datazilla 21.8T 6.98T 14.8T - 13% 32% 1.00x ONLINE /mnt
[root@freenas-esxi6a] /mnt/datazilla/recovery-recovery-CYA-clone# zpool status datazilla
pool: datazilla
state: ONLINE
scan: scrub repaired 0 in 4h23m with 0 errors on Sun Sep 18 04:23:58 2016
config:
NAME STATE READ WRITE CKSUM
datazilla ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
gptid/684d888f-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
gptid/699161ef-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
gptid/6ade9b2f-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
gptid/6c2112df-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
gptid/6d64c12f-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
gptid/6e6dc39f-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
logs
gptid/6ea70c28-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
cache
gptid/6ed6a4de-3f15-11e6-800d-0050569a0ed7 ONLINE 0 0 0
errors: No known data errors
[root@freenas-esxi6a] /mnt/datazilla/recovery-recovery-CYA-clone# zpool status -xv
all pools are healthy
Look for a SAS 2008, 2308 or 3008 card or an Adaptec 1000 series hba. What OS are you using?If I go this route, I'll need a new HBA, anyone running a low cost one you can recommend? I don't need blazing fast speed by any means as they are just media servers. The cards I use will need to be changed to get over the 2TB limit.
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What do you think of the Supermicro AOC-SAS2LP-MV8? I snagged two of those on eBay for $60/EA from a seller I've dealt with in the past. I don't know jack about these cards as I've always just used HBA's since I run unRAID. So going with another simple HBA without having to re flash them seemed like the logical choice.Look for a SAS 2008, 2308 or 3008 card or an Adaptec 1000 series hba. What OS are you using?
This is a good one for the 2308 generation - SuperMicro AOC-S2308L-L8i 8 Ports SAS-600 PCIe 8Gb/s Server RAID Controller Card and NEW SuperMicro AOC-S2308L-L8E 8 Ports SATA/SAS 6Gb/s PCI-E RAID Card Low Profile
I just cut the price of the 3 I have lying around to $80 for all with 3 other RAID cards, check out my FS posting, but they have several downsides according to my previous research:What do you think of the Supermicro AOC-SAS2LP-MV8? I snagged two of those on eBay for $60/EA from a seller I've dealt with in the past. I don't know jack about these cards as I've always just used HBA's since I run unRAID. So going with another simple HBA without having to re flash them seemed like the logical choice.
Cool, the SAS2LP-MV8 cards do seem to be holding their value on ebay - please report any findings about:I was just basing the price on closed/sold eBay auctions. So in the event I don't like them, I can sell them, pay my fees and break even. So it was worth trying out for free
I have run into similar behavior a few times:I'm having problems with this hdds.
TLDR:
after writing ~600Gb the read speed drops to 2MB/s, exactly the same thing happens to a replacement hdd.
Long version:
I need a 2.5" hdd for on site weekly backup for my 1U server,
I shuck my old 2TB Seagate Expansion Portable to go into server and ordered a replacement 4TB for offsite (panned to shuck it and swap it when proven worthy).
When 4TB drive arrived i inspected it, checked smart, did some speed test and since everything seamed ok started to rsync data from old to new.
Everything went fine for couple of hours and about 550Gb, then sync speed dropped to very low speed.
I restarted the computer and sync process couple of times to no avail, then i noticed partition mounting took very long time so i read some files back and the speed was very very low(1.5-2MB/s).
Thinking that hdd may be defective i did a smart short test and a selective test for first 100 lba (witch both passed).
So i zerro filled ~1TB (witch oddly writes at ~100Mb/s) and returned the drive for a replacement.
With the replacement drive did almost the same thing except being extra careful in initial tests and allowing the drive to rest and cool down from time to time.
Exactly the same thing happened to the replacement only a bit latter at ~700Gb written.
I think one of the following happens (ascending probability):
Any thoughts ?
- there is a bad batch
- there is a firmware bug related to thermal dilatation compensation (worked fine under 30C, started weird behavior after reaching ~45C)
- (hopefully) something wrong with usb bridge
I just got them a few minutes ago. I wanted a couple to play with as I have some SAS2 expanders coming for my 826 chassis. I had a slug of the old hated Seagate 3TB drives that I put into one of my 846 chassis with a SAS1 backplane. Always get into arguments with people on Reddit about how these older SAS1 backplanes can't handle any drive over 2TB. While this is partially correct that those backplanes don't play nice when loaded with 24 drives >2TB, I had 23 of them recognized with a SAS1 HBA. They just happen to only show 2.2TB due to the controller limitations. I had also read multiple times that these controllers would only see 8 drives even when connected to an expander backplane such as the SAS1 expander in my 846 chassis.Cool, the SAS2LP-MV8 cards do seem to be holding their value on ebay - please report any findings about:
- SAS expander compatibility
- Driver stability or issues
- firmware updates and their affect on the above.
rsync was done on out of the box NTFS partition with Arch Linux, then checked on windows, also reproduced the issue on other 3 computers running Windows 10, CentOS 7, and Linux Mint.Suggestions/questions:
- Your issue could be a thermal issue with the USB 3.0 controller, and not the drive itself - try shucking it.
- What filesystem are you using on the drives?
- What OS are you running?
- How large are the files you are transferring? (Small files can cause a lot of writes to happen to the directory entries and data sectors in rapid succession, causing really slow write times)
=== START OF INFORMATION SECTION ===
Device Model: ST4000LM016-1N2170
Serial Number: W80xxxxxxx
LU WWN Device Id: 5 000c50 09bb76b3e
Firmware Version: 0003
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Oct 24 20:26:27 2016 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Red
Device Model: WDC WD40EFRX-68WT0N0
Serial Number: WD-WCCxxxxxxxx
LU WWN Device Id: 5 0014ee 20a967c06
Firmware Version: 80.00A80
User Capacity: 4,000,787,030,016 bytes [4.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Mon Oct 24 20:21:18 2016 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled