SanDisk CloudSpeed Eco 1.92TB 2.5" SATA $120
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Both PM863 and Cloudspeed Eco II are same generation time-wise (2015); manufacturer specs are better in PM863; plus it appears there is a weird issue with Cloudspeed Eco on sequential read workloads, which PM863 do not have. I've just got Cloudspeed Ultra (SDLF1CRM-017T-1HST) and it does not have this issue either. But now i've got third Cloudspeed Eco II drive i've tested has same weird slow sequential reads (<100MB/sec), so i plan to stay away from those. If anybody has counter-example with Eco II sequential read speed in the expected range (300-400MB/sec) i'd love to see it, since those are now cheapest drives available...
I didn't say they were different generations, just that THAT generation Samsung (and around there too) is not better than those Sandisk and I personally avoid due to QOS\Latency issues when performance matters.... for throwing 12 - 36 of either into a storage array then either is fine probably for that 
There's been people prior to you stating they have not had that issue, and the ~dozen I purchased aren't having weird read issues, if you are return them and get one that doesn't, seems fine to me to risk on the "issue" with the sandisk, then swap out if present on the ones you received.
There's been people prior to you stating they have not had that issue, and the ~dozen I purchased aren't having weird read issues, if you are return them and get one that doesn't, seems fine to me to risk on the "issue" with the sandisk, then swap out if present on the ones you received.
Well, while Samsung PM863 is a bit long in the tooth, it appears to be much better than Cloudspeed Eco II not only on the specs, but in the benchmarks as well; i was too lazy to look at benchmarks before, trusting the specs; now i know why those Eco II are so cheap :-(
www.storagereview.com
With regard to sequential performance issue, all Eco II i've tested seem to have same issue with sequential reads; no such issue with Cloudspeed Ultra; could be firmware issue, which is why i'm asking if anybody has different experience. So far i've tried Linux boxes, MacOS, FreeBSD, with variety of direct SATA and USB-SATA or Thunderbold-SATA bridges; same results; it's the drive.
For many users sequential read performance may not matter that much (vs random io), but i've a few usage patterns (low-level backup, RAID1 restoration) where slow sequential reads make drive unusable for me.
Enterprise Read Intensive SATA SSD Roundup Review
When it comes to enterprise SSD marketing currently, NVMe and high-capacity SAS drives garner…
www.storagereview.com
With regard to sequential performance issue, all Eco II i've tested seem to have same issue with sequential reads; no such issue with Cloudspeed Ultra; could be firmware issue, which is why i'm asking if anybody has different experience. So far i've tried Linux boxes, MacOS, FreeBSD, with variety of direct SATA and USB-SATA or Thunderbold-SATA bridges; same results; it's the drive.
For many users sequential read performance may not matter that much (vs random io), but i've a few usage patterns (low-level backup, RAID1 restoration) where slow sequential reads make drive unusable for me.
I just got my Ultra 1.7T and figured it would be a good time to do some comparisons with the Eco 1.92T (both running firmware ZR11RPA1,) since it seems to be of interest I started with sequential read (after fully writing random data to both drives), and did not get any read rate issue:
I lost the dd output from the Ultra 1.7T, but I did log the entire thing to chart:
Test system is running a vanilla Rocky Linux 9 on whatever SATA ports my Supermicro X11DPL-i has.
Code:
CloudSpeed Eco II 1.92TB:
# dd if=/dev/urandom of=/dev/disk/by-id/scsi-SATA_SDLF1CRR-019T-1H bs=1M status=progress
dd: error writing '/dev/disk/by-id/scsi-SATA_SDLF1CRR-019T-1H': No space left on device
1831421+0 records in
1831420+0 records out
1920383410176 bytes (1.9 TB, 1.7 TiB) copied, 5440.94 s, 353 MB/s
# dd of=/dev/null if=/dev/disk/by-id/scsi-SATA_SDLF1CRR-019T-1H bs=1M iflag=direct status=progress
1920383057920 bytes (1.9 TB, 1.7 TiB) copied, 6632 s, 290 MB/s
1831420+1 records in
1831420+1 records out
1920383410176 bytes (1.9 TB, 1.7 TiB) copied, 6632 s, 290 MB/sTest system is running a vanilla Rocky Linux 9 on whatever SATA ports my Supermicro X11DPL-i has.
That looks wonderful, thank you!
I guess there are defective Eco II's out there.
My "slow reading" Eco II drives all had ZR06RPA1 firmware. My normally performing Ultra also has ZR11RPA1.
I guess i may try another pair of Eco II's; and try upgrading firmware if it's slow reading.
I guess there are defective Eco II's out there.
My "slow reading" Eco II drives all had ZR06RPA1 firmware. My normally performing Ultra also has ZR11RPA1.
I guess i may try another pair of Eco II's; and try upgrading firmware if it's slow reading.
I've had several Ebay listings for these drives in the $45-50 range in my watch list for a while now. So far, I've not bought because I don't need them yet and it seems a genuine tossup if you'll get one that's literally brand new or one that's totally thrashed. I did notice that some of the sellers have listings promising low usage for a higher price. So, at least some of them are making an attempt to bin these a bit.
Now, ebay is hammering my phone with dire warnings that most of the listings are "almost gone!" and I need to "get your's before its too late!". I hate when it does that, because it makes my mouse stray over to the buy button like it got a life of its own. Yeah, I can turn those notifications off...but then I wouldn't when I need to, "get something before its too late."
Now, ebay is hammering my phone with dire warnings that most of the listings are "almost gone!" and I need to "get your's before its too late!". I hate when it does that, because it makes my mouse stray over to the buy button like it got a life of its own. Yeah, I can turn those notifications off...but then I wouldn't when I need to, "get something before its too late."
Same boat, don't need them... been thinking about it. I'm wondering if I wait another 6 months or so 4TB drives may come up around this price range.
Just checked my 12 CloudSpeed Eco II (SDLF1CRR-019T-1HA1): from 354 MB/s to 397 MB/s with 9 out of 12 being over 390 MB/s.
I upgraded all to Firmware ZR11RPA1 right after I’ve bought them, unfortunately no test with the older firmware versions they came with (from ZR02 to ZR06).
I hunted around and found firmware ZR08, applied it to my Eco 1.92T, rebooted, and so far 150GB into the same dd sequential read test it's doing 360MB/s very consistently. Not sure what the previous 290MB/s was about, perhaps it had a bunch of internal cleanup to do after the full disk worth of sequential writes, I will re-test with ZR11 after this run finishes.
CloudSpeed Gen. II Eco SSD Drive Firmware (ZR08) Not sure if there's a source which isn't in German, but I don't believe the firmware binaries are in any particular language. I was unable to find anything earlier.
I no longer have Cloudspeed Eco II, only Cloudspeed Ultras, which never yet exhibited sequential read problem for me.
Next time i'll be ordering i'd try Eco II again.
Next time i'll be ordering i'd try Eco II again.