Samsung SSD PM1643 3.8TB SAS 12Gb/s MZ-ILT3T8A 2.5" @ $289.98

UhClem

Member
Jun 26, 2012
88
34
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NH, USA
Looks like these are NetApp OEMs [Google <samsung pn x357a>] (see listing photo).

Does that pose any issues re: blocksize and/or FW updates?
 

itronin

Well-Known Member
Nov 24, 2018
618
356
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Denver, Colorado
I'd keep an eye out for this drive and the different buybest's. I have seen them run out then list more.
Historically they list 'em as they process them. Maybe this is all they have but maybe not.
 

Firebug24k

Member
Apr 12, 2017
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going fast!
Oof, missed it. New crypto mining is eating up the supply of used high endurance datacenter SSDs pretty quick.
 

LodeRunner

Active Member
Apr 27, 2019
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Does anyone know if these are 512 or 520 byte drives? I can't find a spec sheet that says. Given that they're NetApp, I would assume 520, but would like to confirm if that's the case and if they can be changed to 512 with sg_format
 

itronin

Well-Known Member
Nov 24, 2018
618
356
63
Denver, Colorado
Does anyone know if these are 512 or 520 byte drives? I can't find a spec sheet that says. Given that they're NetApp, I would assume 520, but would like to confirm if that's the case and if they can be changed to 512 with sg_format
I cannot say for sure with these drives. However the last batch of HGST HUSMM1616's SSD's (EMC P/N) I purchased from a buybest had been reformatted from 520 to 512 as part of their testing/provisioning process. You can always message them and ask.
 

Firebug24k

Member
Apr 12, 2017
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I'll bite and see if I can reformat... though by the time I get it I bet they're all sold out.
 

soaringswine

New Member
Nov 29, 2020
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Seller said they are 520 bytes. I messaged to ask if they can be formatted to 512 bytes with sg_format or if they are locked.
 

soaringswine

New Member
Nov 29, 2020
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0
1
these have SFF-8680 (12 Gb/s) connectors, right? kind of surprisingly hard to find SFF-8643 to SFF-8680 cables except from Taiwan or random sites. any suggestions?

at some point, I'll explore the SAS multipath options with the Active-Active dual ports, but not now..
 

NateS

Member
Apr 19, 2021
35
17
8
Sacramento, CA, US
these have SFF-8680 (12 Gb/s) connectors, right? kind of surprisingly hard to find SFF-8643 to SFF-8680 cables except from Taiwan or random sites. any suggestions?

at some point, I'll explore the SAS multipath options with the Active-Active dual ports, but not now..
Yeah, I think they're pretty hard to find since 95% of the time these drives are connecting to a backplane, so the cable-only option is actually the more unusual one.

In my case, since I don't strictly need the SAS3 speeds, I went ahead and got some SFF-8643 -> 4x SFF-8482, which are a little more available. The connectors are otherwise the same; it's just that the newer 8680 is certified for SAS3, and the older one is not. I grabbed them from this Ebay seller, but apparently they only have one left now: Mini SAS SFF-8643 to 4 SFF-8482 29pin Connectors + SAS 15pin Power 12GB/S Cable | eBay
 

dvicory

New Member
Apr 19, 2021
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Probably a dumb question but finding some conflicting info: would this work in a SAS2 backplane, on say a Dell R720?
 

Sogndal94

Senior IT Operations Engineer
Nov 7, 2016
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Norway
Probably a dumb question but finding some conflicting info: would this work in a SAS2 backplane, on say a Dell R720?
Yes, it should. SAS3 is backwards compatible with SAS2. So If you connect a SAS3 drive to a SAS2 compatible RAID controller like the H710, the drive will negotiate at 6Gbps instead of 12Gbps. You will ofc be limited to SAS2 speed. :)
 

Weapon

Member
Oct 19, 2013
97
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Yes, it should. SAS3 is backwards compatible with SAS2. So If you connect a SAS3 drive to a SAS2 compatible RAID controller like the H710, the drive will negotiate at 6Gbps instead of 12Gbps. You will ofc be limited to SAS2 speed. :)
So these would work in a standard Supermicro SAS2 backplane from a SC846?
 

soaringswine

New Member
Nov 29, 2020
6
0
1
****, got this message back from the seller:

"According to our tech that tested these SAS, they cannot change the boot sector size, so these are locked to 520 Bytes"