HGST ZeusRAM Z4RZF3D-8UC - $200 BO accepted

[whitey]

Just snagged one of these (I am a proud owner of one of these jewel's again) for $200 on BO from ebay seller boardroom_tech. Seems like a decent deal, I put in a couple $200 offers on new ones that got rejected, assuming you can't wear these out really so I am not stressed about new v.s. used.

HGST ZeusRAM Z4 3.5" 8GB SAS Hard Drive 6Gb/s MLC Enterprise SSD RAM Z4RZF3D-8UC | eBay

3 left

EDIT: Report back w/ 'how low can you go' BO's accepted, I won't be mad, good to see if someone can get one for $150 but I bet I am near the bottom of the limit of BO's accepted heh

 

[whitey]

I'm stalking the listing, another one GONE, who jumped and how low? hah

 

[zeynel]

, i snagged also one for $200 , thx @whitey

offered first 185
counter 250
second offer 195
counter 230

my last offer with message attached , that $200 is really my limit.

accepted

 

[Hal]

I've made a BO of 155$...... not accepted

2 left ..... 25 wolves on trail

 

[whitey]

And I am right, $200 was/is bottom of barrel :-D

 

[BackupProphet]

Are ZeusRAM really better than a PCIe/NVM alternative today?

 

[azev]

Are ZeusRAM really better than a PCIe/NVM alternative today?

Well, I think NVME would be faster and have low latency, but this guy have unlimited endurance and for $200 is a steal compared to high performing NVME with lots of endurance.

 

[whitey]

Yeah for my use case 'I think' it was worth it, I've been eyeballing a P3700 recently (could go P3600/3605 as well) but I really need 800GB+, could MAYBE get away w/ 400GB but if I did use that P3700 400GB for a ZIL I would feel as if I wasted/overallocated that resource/device for what 'it could' be doing.

I owned one of these long ago when they were like $1000-1500 range so for $200 I will bite again, I certainly saw the benefits of them and my norco 2212 chassis I am gonna put it into has 3.5" slots and the 2.5 drives that are in there (hussl's) will be going into a sc113 2.5" slot chassis along side a set of 4 seagate backup plus 4tb drives and up to co-lo for offsite DR/protection of our most precious bits arnd here. (IE: read fire/theft)

BAD news is, goodbye test bench, wife told me to get a move on getting data offsite as a triple CYA :-D

Good news, buddy's VDI co-lo stack has un-used RU's :-D tee hehe, free to me, woohoo! Hey I am not being greedy, only 1U and a couple 1GbE ports :-D

 

[Rand__]

Those seem to come down - got one for $225 two weeks ago and one for €200 yesterday...

 

[i386]

Are ZeusRAM really better than a PCIe/NVM alternative today?

I think @T_Minus had some benchmark results where the zeusram would outperform nvme drives at low queue depths.

 

[T_Minus]

Finishing putting this system together so I can the additional tests I wanted to run months ago

Going to boot her up here in a few minutes, and then start installing NVME drives.

 

[DouglasteR]

8GB is way to low.

If it was at least 16GB it would be an amazing deal !

Question. Does it have superior 4k performance compared to top nvme offerings ?

 

[T_Minus]

8GB is way to low.

If it was at least 16GB it would be an amazing deal !

Question. Does it have superior 4k performance compared to top nvme offerings ?

Your network performance is?

 

[whitey]

You cannot even fill 8gb log cache w/ 40gb speeds so I beleive you are misinformed

 

[Rand__]

"ZFS will take data written to the ZIL and write it to your pool every 5 seconds. Here is some simple throughput math using a 1Gb connection. The maximum throughput, ignoring overheads and assuming one direction, would be .125 Gigabytes per second. With 5 seconds between SLOG flushes and using a 1Gbit link with 100% synchronous writes, the most you will see written to your SLOG is 5 x .125 GB = .625 GB." x40 = 25 GB

So indeed 8GB is great for up to 10GB/s but beyond it might get a touch small.
As I asked @gea about this he recommended to stripe drives using HW Raid

Going to boot her up here in a few minutes, and then start installing NVME drives.

Looks like you beat me to it, have had no time to get them installed yet.

 

[whitey]

In a perfect IT world w/ stars aligned maybe those numbers add up...aka I stand corrected heh, thought I saw @gea recently say zeusram could take 40g speeds flush but maybe I misunderstood.

 

[DouglasteR]

Actually im on 56Gbps, but we aren't normal ppl LOL.

 

[marcoi]

how does this compare to vs a regular ssd drive? I have an Intel RS25AB080 (LSI based raid card) that can use ssds as cache. I am currently using the raid card with 4x 250gb ssd in raid 10 (max cache size is 500GB). That cache drive is attached to my raid-5 array (3x3tb). Would the zeus outperform the 4 ssd drives? This is being used in my test VM server so no production,etc.

 

[Rand__]

Latency is the key, not write speed - dont think you'll have ZeusRam/P3700 latency levels on that bunch of discs

 

[T_Minus]

Yes it will.

It's not meant to replace a 500gb cache drive though. This drive is only 8.