Suggestions for a RAID Cache SSD ?

[Allan74]

Can anyone suggest an old (cheap/small) Enterprise drive that is readily available and suitable for use as a RAID Cache ?
I know the rough specs that I would like to meet (2.5" SLC SSD, 16+GB, SAS2 or SATA3)
I am just not familiar with brands/models that work well for this application.

I plan to use a 2.5" to 3.5" Drive adapter from a dead Velociraptor, tray it and add it to one of my SAS Hotswap Backplane Enclosures, so oddball tall 2.5" drives will also work, as the Velociraptor that I removed was quite a thick boy....



Thanks for any and all suggestions.
Allan

 

[i386]

Can anyone suggest an old (cheap/small) Enterprise drive that is readily available and suitable for use as a RAID Cache ?

cheap is relative: the awesome hgst husmm are about 3x times the price vs. pre covid/chia. the 200gb model went from <$30 to $100+ each...

 

[Allan74]

200GB is far more than I need and I was hoping to find something well under 100GB, so that even Chia guys would have passed it by due to size for under $100.

 

[i386]

12GBit/s sas3
Hgst:
HUSMH8010BSS200

6GBit/s sas2
Hgst:
HUSSL4010BSS600
HUSSL4010BSS601 (TCG version of HUSSL4010BSS600)
Toshiba:
MK1001GRZB

 

[gb00s]

In Germany: Still too much power usage Therefore on SALE

or here for a long time. The seller refuses to go below 20 EUR for a long time ... SALE

But I believe the Velociraptor trays are coming with SATA connectors, no??

 

[Allan74]

But I believe the Velociraptor trays are coming with SATA connectors, no??

The 'male' end is standard SATA and the 'female' end is undivided, so physically it will accept a SAS drive. (I have the RED PCB adapter).
It has the same ends as the basic Dell UFO70 blue SAS/SATA interposer.

I may have to setup the test bench and connect a SAS HDD to the tray's connector, then a 4x SATA/SFF-8087 breakout cable to a RAID card to check compatibility.

 

[Allan74]

Hgst:
HUSSL4010BSS600
HUSSL4010BSS601

Thanks. I found a starting point.

*LOT OF 2* HITACHI 100GB 2.5" 6Gb/s SAS SSD HUSSL4010BSS600 | eBay

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That pair just seems too good of a deal compared to the others listed, or perhaps it's a good deal and the others are all overpriced.

thanks for the help.

 

[T_Minus]

I may have a drive or 2 of the 100GB HUSSL sitting around here, for sure have some 200GB SAS3.

The performance difference between the 100GB SAS2 and 200GB SAS3 is pretty big though, for a cache drive I'd rather have the unused space and > performance

If you need anymore let me know happy to see what's sitting around

Are you sure you don't need 24x 400GB SLC drives