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Re:80M I/O Per Second with a Standard 2U System by bullen on Friday May 28, 2021 @05:21AM (#27313288)
What drives did you get?
Re:80M I/O Per Second with a Standard 2U System by consp on Saturday May 29, 2021 @04:38AM (#27323883)
Sun/oracle branded HGST SS300 drives (HUSMH4020ASS210), they have the specs in the ballpark of the SS800 drives in endurance (according to the scsi data pages from the disks) but read/write performance of the SS300.
Re:80M I/O Per Second with a Standard 2U System by bullen on Saturday May 29, 2021 @07:33AM (#27324570)
Trying to google it it seems unclear to me what the product is... SSD or hybrid? Also what tech (SLC, MLC, TLC, QLC) and how many nm? This is the real reason why I went all in on the X25-E; there is no clear winner since 10 years... either it's super expensive and might be good or cheap and guaranteed crap!

Also the interfaces are all over the place, PCIe, SAS, SATA, NVMe (which is PCIe?), M.2 with double PCIe?! with all kinds of connectors...

We have a serious problem with storage of data when magnetic tape is still the real solution!

Re:80M I/O Per Second with a Standard 2U System by consp on Saturday May 29, 2021 @07:51AM (#27324647)
MLC SSD, Sorry for being unclear, googling it is difficult as they were never released to non DC providers (these are custom for oracle) so data sheets are hard to get (I only have partial data, rest is from the sas inquiry and mode pages). You can deduce some of the specs from the name as they are the same for all hgst drives:

HUS - hgst uktrastar standard

MH - MLC high endurance (4PB is claimed for the 200GB drives, verified this by looking at the lifetime counter and the bytes written)

4020 - max spec 400gb, device is 200gb

A - generation

S - 2.5" formfactor

S2 - 12GB/s (sas3), dual port

1 - probably means custom spec all my hgst former netapp/sun/oracle drives have this set to 1 both SSD and hdd

0 - crypto sanetize

Haven't seen them a lot on eBay last month but caching drives with low percentage writes do show up from time to time in batches.

Re:80M I/O Per Second with a Standard 2U System by bullen on Saturday May 29, 2021 @09:18AM (#27325025)
$25 per 200GB MLC used... I'd rather pay $100 per 64GB SLC unused.