Hi Team,
I got a chart of Dell for SSD speed rate as below:
from here you can see the rate is calculated by K, so how can i convert it to Mb/s ?
Thanks
Solved! Go to Solution.
Class 10 vs 20 vs 30 vs 40 vs 50 2100K = 2.1 Meg
Posting Pictures Doesnt work All we see is a Triangle
The answer is not a one size fits all nor is it a sound byte.
Class | Sequential RW | Random RW | Interface |
10 Value | 520K/320K | 30K/10K | Sata |
20 Mainstream | 500K/300K | 80K/60K | Sata |
30 Performance | 550K/350K | 90K/75K | Sata |
40 Performance | 1500K/350K | 200K/80K | PCI-E NVME |
50 Performance | 2100K/1200K | 300K/100K | PCI-E CARD X4 |
Sequential = Boot, hibernate, daily power up and down
Random = tasks such as file search:KIOPS
Typical SATA 2 speed is 250K
Typical SATA 3 speed is 500K
The faster speeds are usually 2 NVME drives in parallel RAID 0
X16 PCI-E cards can Get 8000K sequential speed.
Sequential Read (MB/s) Sustained, 128KB 8,150,000
Sequential Write (MB/s) Sustained, 128KB 4,800,000
Random Read (IOPS) Sustained, 4KB QD64 975,000
Random Write (IOPS) Sustained, 4KB QD64 132,000
Random 70/30 R/W (IOPS) Sustained, 4KB QD64 369,000
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Class 10 vs 20 vs 30 vs 40 vs 50 2100K = 2.1 Meg
Posting Pictures Doesnt work All we see is a Triangle
The answer is not a one size fits all nor is it a sound byte.
Class | Sequential RW | Random RW | Interface |
10 Value | 520K/320K | 30K/10K | Sata |
20 Mainstream | 500K/300K | 80K/60K | Sata |
30 Performance | 550K/350K | 90K/75K | Sata |
40 Performance | 1500K/350K | 200K/80K | PCI-E NVME |
50 Performance | 2100K/1200K | 300K/100K | PCI-E CARD X4 |
Sequential = Boot, hibernate, daily power up and down
Random = tasks such as file search:KIOPS
Typical SATA 2 speed is 250K
Typical SATA 3 speed is 500K
The faster speeds are usually 2 NVME drives in parallel RAID 0
X16 PCI-E cards can Get 8000K sequential speed.
Sequential Read (MB/s) Sustained, 128KB 8,150,000
Sequential Write (MB/s) Sustained, 128KB 4,800,000
Random Read (IOPS) Sustained, 4KB QD64 975,000
Random Write (IOPS) Sustained, 4KB QD64 132,000
Random 70/30 R/W (IOPS) Sustained, 4KB QD64 369,000
Report Unresolved Customer Service Issues
here
I do not work for Dell. I too am a user.
The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support
Can't see your pic, but typically you divide by 8 (8 bits in a byte).
So it means for example:
20 Mainstream | 500K/300K |
|
-> The sequential rate is ~ 0.5Mb/s / 0.3 Mbps ?
Thanks
Yes thats the typical SATA 3 speed for onboard controller. Faster requires Raid where more than one drive at a time is running and typically X2 X4 X8 X16 PCI-E.
Apricorn Velocity Solo X1 card is 500K max for example.
The Serial ATA (SATA) interface was designed primarily for interfacing with hard disk drives (HDDs), doubling its native speed with each major revision: maximum SATA transfer speeds went from 1.5 Gbit/s in SATA 1.0 (standardized in 2003), through 3 Gbit/s in SATA 2.0 (standardized in 2004), to 6 Gbit/s as provided by SATA 3.0 (standardized in 2009)
https://www.bhphotovideo.com/c/product/887344-REG/Apricorn_vel_solo_x1_Velocity_Solo_x1_SSD.html
PCIe 2.0 x1 slot with two SATA III (6 Gbps)
(backwards compatible with PCIe 1.0 x1 slot and SATA II & I)
Report Unresolved Customer Service Issues
here
I do not work for Dell. I too am a user.
The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support