SanDisk Announces Z410 Client SSDby Billy Tallis on April 27, 2016 5:05 PM EST
SanDisk has introduced a new low-end drive to their line of client SSDs targeted at business and OEM customers. The Z410 is positioned closely to Z400s but is not a direct replacement. Instead, the Z410 focuses on offering just the most popular capacities for mainstream PC usage while the Z400s continues to serve other markets with mSATA and M.2 versions and capacities as small as 32GB.
First announced almost a year ago as the first 15nm TLC SSD, the Z400s sought to cut costs in order to break into new parts of the embedded and client PC markets. The Silicon Motion SM2246XT controller it uses is a DRAM-less two or four channel design that limits potential performance and capacity. The SM2246XT also lacks encryption support and LDPC error correction.
The SanDisk Z410 abandons the mSATA and M.2 form factors to focus specifically on 2.5" with capacities from 120GB to 480GB. The only significant performance difference from the Z400s is a substantial increase in sequential write speed, while sequential read speeds are rated slightly lower and random read and write specifications are similar. The Z410 does benefit from a controller upgrade that allows for LDPC error correction and SLC caching, but it seems the latter's impact on write amplification has kept the write endurance ratings from increasing substantially. The three year warranty period on the Z410 is also shorter than the five years offered for the Z400s.
|SanDisk OEM Client SSD Comparison|
|Capacities||128GB, 256GB, 512GB, 1TB||120GB, 240GB, 480GB||32GB, 64GB, 128GB, 256GB|
|Controller||Marvell 88SS1074||?||Silicon Motion SM2246XT|
|Sequential Read||545 MB/s||535 MB/s||546 MB/s|
|Sequential Write||520 MB/s||445 MB/s||342 MB/s|
|Random Read IOPS||95k||37k||37k|
|Random Write IOPS||75k||68k||69k|
|Form Factors||2.5", M.2 2280||2.5"||2.5", mSATA, M.2 2242, M.2 2280|
|Encryption||TCG Opal (optional)||None||None|
|Endurance||72-320 TBW||40-120TBW||20-72 TBW|
|Warranty||5 years||3 years||5 years|
The introduction of the Z410 puts SanDisk in the unusual position of having three tiers of TLC NAND-based SATA SSDs. While their consumer-oriented product line still includes the MLC-based Extreme Pro, SanDisk's business/OEM line tops out with the TLC-based X400. The X400 distinguishes itself with clearly higher performance and endurance and the availability of a 1TB capacity, but the Z400s and Z410 are close enough to cause some confusion. The Z410 will probably end up displacing the 128GB and 256GB 2.5" Z400s while the rest of the Z400s line sticks around for the less competitive niches.
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BurntMyBacon - Thursday, April 28, 2016 - link@maofthun: "I thought the Z400s is MLC, not TLC"
Pretty bad endurance rating for MLC. I think I'll pass.
ghanz - Thursday, April 28, 2016 - link@maofthun: I think you are right. Apparently it's 15nm MLC. I may be wrong but I don't think the Silicon Motion SM2246XT works with TLC NAND.
Z400s press release on Anandtech
iwod - Thursday, April 28, 2016 - linkYou can get pretty decent performance from SSD drive now, it is now trying to get higher capacity and lower price. Much like 64Gb is fade out, once 256GB overtake 128GB drive as basement we should see the final adoption of SSD.
Although I dont know what is required for this to happen.
BurntMyBacon - Thursday, April 28, 2016 - link@iwod: "You can get pretty decent performance from SSD drive now, it is now trying to get higher capacity and lower price."
This is where the focus should be for the moment. However, I'm hesitant to purchase a drive based on flash with sub 2xnm feature size and TLC. I get that error correction has come a long way, but expecting errors as routine and relying on correction for normal operations does not inspire confidence. I'm all for cheaper SSD storage. I'll even sacrifice some performance to get there (as long as I have the option to spend up for more performance). However, I don't think sacrificing reliability is the way to get there. There is still plenty of potential in 3D-NAND and competition is just now starting in this space.
SSDlight - Friday, June 10, 2016 - linkShould we be using SSD wo/DRAM? Seems Dram-Less SSD are beginning to enter the market. This SanDisk z410 and SanDisk SSD Plus seems to be the same exact product and just recently got ripped at tweaktown as the worst SSD ever. This could be JMicron all over again. Hope anandtech will test this drive and other dram-less drives entering the market. Thoughts?
"What we got from the all-plastic enclosed SSD Plus and Z410, was metaphorically speaking all-plastic performance."