SSD SATA 3.3 and Broadcom / LSI SAS1068E PCI-Express Fusion-MPT SAS

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi all,

I hope I am in the right news group. If not please point me to a place where
someone can give me an advice in which direction I could look for an
answer.

I've been using the below mentioned board (see dmidecode) with the below
mentioned SAS controllers (see lspci) for many years with normal
(rotating/spinning) disk drives.
I now bought 2 SSD disks to replace 2 of the spinning once and I was
surprised to find out that the older disks are using 3Gb/s transfer rate
while the SSDs are using 1.5Gb/s. The SSDs are reporting SATA 3.3 (see
below)

In the mptsas driver I see 3 and 6 but no 3.3 or similar. 

https://github.com/torvalds/linux/blob/ae545c3283dc673f7e748065efa46ba95f678ef2/drivers/message/fusion/mptsas.c#L3087C1-L3111C3

If I understand correctly the rate is negotiated by the controller and the
mobo. I am wondering where could be the problem. Is it really matter of
negotiation i.e. the driver does not understand 3.3 or a technical
constrains/incompatibility at 3Gb/s?

Last question: If I would have to replace the controllers, what controller
would be recommended?

Thank you in advance

BR


# lspci
01:00.0 SCSI storage controller: Broadcom / LSI SAS1068E PCI-Express
Fusion-MPT SAS (rev 08)
08:00.0 SCSI storage controller: Broadcom / LSI SAS1068E PCI-Express
Fusion-MPT SAS (rev 08)

# dmidecode

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASUSTeK COMPUTER INC.
        Product Name: M5A97 EVO R2.0
        Version: Rev 1.xx

Handle 0x0028, DMI type 9, 17 bytes
System Slot Information
        Designation: PCIEX16_2
        Type: x16 PCI Express
        Current Usage: Available
        Length: Short
        ID: 3
        Characteristics:
                3.3 V is provided
                Opening is shared
                PME signal is supported
        Bus Address: 0000:00:1c.5



# smartctl

=== START OF INFORMATION SECTION ===
Model Family:     WD Blue / Red / Green SSDs
Device Model:     WDC  WDS200T1R0A-68A4W0
...
Firmware Version: 411010WR
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
TRIM Command:     Available, deterministic, zeroed
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-4 T13/BSR INCITS 529 revision 5
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 1.5 Gb/s) <<<<<<<<<<<< HERE
Local Time is:    Sun Aug 13 10:38:11 2023 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Red
Device Model:     WDC WD20EFRX-68EUZN0
...
Firmware Version: 82.00A82
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2 (minor revision not indicated)
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) <<<<<<<<<<<< HERE
Local Time is:    Sun Aug 13 10:38:11 2023 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

-- 
FCD6 3719 0FFB F1BF 38EA 4727 5348 5F1F DCFE BCB0




[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux