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  • Works fine in Linux, fast, no extra drivers needed

    posted by tillos on 07/09/2010

    Involvement:Expert (understands the inner workings) - Ownership:less than 1 day


    It is plug and play for Ubuntu (actually any Linux distribution should work). I did not need the CD.

    I get consistently over 70MB/s for my external disk while connecting to USB2.0 would achieve up to 25MB/s (variable, depends on CPU load and size of files).

    lspci reports:

    sudo lspci -vvv -nn -s 14:00.0

    14:00.0 SATA controller [0106]: JMicron Technology Corp. JMB360 AHCI Controller [197b:2360] (rev 02) (prog-if 01)

    Subsystem: JMicron Technology Corp. JMB360 AHCI Controller [197b:2360]

    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-

    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

    Latency: 0, Cache Line Size: 64 bytes

    Interrupt: pin A routed to IRQ 19

    Region 0: I/O ports at 9000 [size=8]

    Region 1: I/O ports at 8000 [size=4]

    Region 2: I/O ports at 7000 [size=8]

    Region 3: I/O ports at 6000 [size=4]

    Region 4: I/O ports at 5000 [size=16]

    Region 5: Memory at fc000000 (32-bit, non-prefetchable) [size=8K]

    Capabilities: [68] Power Management version 2

    Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)

    Status: D0 PME-Enable- DSel=0 DScale=0 PME-

    Capabilities: [50] Express (v1) Legacy Endpoint, MSI 01

    DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us

    ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-

    DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-

    RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-

    MaxPayload 128 bytes, MaxReadReq 512 bytes

    DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-

    LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM L0s, Latency L0 <1us, L1 <16us

    ClockPM- Suprise- LLActRep- BwNot-

    LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+

    ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-

    LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-

    Kernel driver in use: ahci

    Kernel modules: ahci

    hdparm reports:

    hdparm -T -t /dev/sdb


    Timing cached reads: 3314 MB in 2.00 seconds = 1658.28 MB/sec

    Timing buffered disk reads: 222 MB in 3.00 seconds = 74.00 MB/sec


    I did not find any.

    I'll write in the comments if it breaks down too soon.


    I am using this with http://www.dealextreme.com/details.dx/sku.9288 which is a SATA to eSata cable.

    I provide power to the disk with a special SATA adapter.

    I should get an eSata to eSata cable so that I can connect it with my new eSata enclosure. Now it's laying on my desk. Such a cable is http://www.dealextreme.com/details.dx/sku.29358


    It is worth to invest in eSata for your external storage. USB 2.0 is not fast enough, and the throughput highly depends on the size of files, and the CPU load.

    I wish the packaging mentioned that it supports Linux.

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