I did some read tests in the first post of this thread. As you can see in the video I made in post 146, all of the lights are blinking on the two chassis because I'm testing 50 drives at a time. Throughput is 1500MB/sec.
Super Cheap Hitachi UltraStar C10k600 450GB 2.5" TCG Encryption Hard Drives
- Thread starter Emulsifide
- Start date
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Ok, you use a wipe tool for checking your disk. it's a way. Maybe i will try it.
For now, i'm using only smartctl & badblocks
Thanks.
For now, i'm using only smartctl & badblocks
Thanks.
The other 14 arrived today and like the first 10, they're all perfect. 
Striped the 14 together and got this.
Then I striped all 24 together and got this. So somewhere below 14 something is maxing out. Probably the controller?
Striped the 14 together and got this.
Then I striped all 24 together and got this. So somewhere below 14 something is maxing out. Probably the controller?
Very nice numbers! Even at 14 drives, these things are screamers. If you're using the SAS expander on the CSE-216, you're probably maxing out the 4 SAS channels you have attached to it. Drop it down to 7 drives and see what happens with the same benchmark.
The 2nd batch of 50 drives is cooking right now. So far, I'm 30% through my mass extinction of data on batch 2 with zero errors.
These things are going to RIP when I have them in the ceph cluster!
The 2nd batch of 50 drives is cooking right now. So far, I'm 30% through my mass extinction of data on batch 2 with zero errors.
These things are going to RIP when I have them in the ceph cluster!
your 4k values went up fine with the 24 Drives, guess limit for sas2 is 2400mb/s, so you are getting close to it in sequential.
...if anyone is interested in a couple of ghetto sequential read/write benchmarks of a 12 drive raid0 stripe volume. The DD write to tempfile2 was pegging a core at 100%, so it may have been CPU bound (single thread):
Code:
[root@nas3 extra]# dd if=/dev/zero of=tempfile2 bs=1M count=163840 conv=fdatasync,notrunc status=progress
170768990208 bytes (171 GB) copied, 119.045944 s, 1.4 GB/s
163840+0 records in
163840+0 records out
171798691840 bytes (172 GB) copied, 124.516 s, 1.4 GB/s
[root@nas3 extra]# echo 3 > /proc/sys/vm/drop_caches
[root@nas3 extra]# dd if=tempfile2 of=/dev/null bs=1M count=163840 status=progress
171780866048 bytes (172 GB) copied, 93.129711 s, 1.8 GB/s
163840+0 records in
163840+0 records out
171798691840 bytes (172 GB) copied, 93.1349 s, 1.8 GB/s
I'm looking to save freight costs to Australia for 24 or 36 drives.
Anyone been able to purchase these drives without the caddies?
If so, how well was the drives packed on their own?
Would I be better to purchase with caddies for better protection and foam packing?
Many thanks in advance.
Anyone been able to purchase these drives without the caddies?
If so, how well was the drives packed on their own?
Would I be better to purchase with caddies for better protection and foam packing?
Many thanks in advance.
Does your shipping address match your banking address? There has been some fraud in recent months.
How many were you ordering? Perhaps try again at a later time?
Cheers
...that is their modus operandi... You can always call them and let them know that they've been neglecting their ebay account... however they might assess an asshole tax for bugging them with an $16/per price
They seem to either miss some offers and just outright decline or accept others. I have a few ebay accounts I spam them with at different hourly intervals to make sure they see at least one of them.
Just used a spare paypal account and everything worked. Ordered 24, waiting for their arrival.