LinhDell
2 Bronze

what is the speed rate of Dell SSD ?

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Hi Team,

I got a chart of Dell for SSD speed rate as below:

Capture.JPG

from here you can see the rate is calculated by K, so how can i convert it to Mb/s ?

 

Thanks

 

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7- Thorium

Re: what is the speed rate of Dell SSD ?

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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.

https://www.seagate.com/files/www-content/datasheets/pdfs/nytro-5910-nvme-ssdDS1953-3-1801US-en_US.p...

 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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4 Replies
7- Thorium

Re: what is the speed rate of Dell SSD ?

Jump 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.

https://www.seagate.com/files/www-content/datasheets/pdfs/nytro-5910-nvme-ssdDS1953-3-1801US-en_US.p...

 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






Get Support on Twitter @DellCaresPro

View solution in original post

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Tesla1856
6 Thallium

Re: what is the speed rate of Dell SSD ?

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Can't see your pic, but typically you divide by 8 (8 bits in a byte).


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LinhDell
2 Bronze

Re: what is the speed rate of Dell SSD ?

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So it means for example:

 

20 Mainstream

500K/300K

 

 

 

-> The sequential rate is ~ 0.5Mb/s / 0.3 Mbps ?

Thanks

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7- Thorium

Re: what is the speed rate of Dell SSD ?

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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






Get Support on Twitter @DellCaresPro

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