Q-TEC 750H USB2 HDD CASE 3.5

Externy box na 3,5" disky.
USB2.0, kompatibilne s USB1.1
aktivne chladenie disku
maly spinany napajaci zdroj
1GB sa skopiruje za cca 2minuty - vlastne meranie na 1GHz celerone

lsusb -v

Bus 005 Device 002: ID 1398:2103
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 Interface
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x1398
  idProduct          0x2103
  bcdDevice           11.05
  iManufacturer          73
  iProduct               90
  iSerial               110
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           39
    bNumInterfaces          1
    bConfigurationValue     2
    iConfiguration          0
    bmAttributes         0xc0
      Self Powered
    MaxPower               98mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk (Zip)
      iInterface              0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               none
        wMaxPacketSize        512
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               none
        wMaxPacketSize        512
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               none
        wMaxPacketSize          2
        bInterval               9
  Language IDs: (length=4)
     0409 English(US)

----------
dmesg

hub.c: USB new device connect on bus5/1, assigned device number 2
usb.c: USB device 2 (vend/prod 0x1398/0x2103) is not claimed by any active driver.
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
scsi1 : SCSI emulation for USB Mass Storage devices
  Vendor: QUANTUM   Model: FIREBALLP LM      Rev: A35.
    Type:   Direct-Access                      ANSI SCSI revision: 02
    WARNING: USB Mass Storage data integrity not assured
    USB Mass Storage device found at 2
    USB Mass Storage support registered.

------------------
dmesg po namontovani disku

Attached scsi disk sda at scsi1, channel 0, id 0, lun 0
SCSI device sda: 58633344 512-byte hdwr sectors (30020 MB)
 /dev/scsi/host1/bus0/target0/lun0: p1
 MSDOS FS: IO charset iso8859-2
 MSDOS FS: Using codepage 852
        

Plati pre Mandrake9.
Ak je radic usb2.0 a aktivny modul ehci-hcd staci pripojit do usb portu.
Ak nie je aktiny modul ehci-hcd funguje ako usb1.1 storage device.

Prva vyhoda je rozumna cena (vid cennik Proca) Funguje ako usb1.1 - tu ale kopirovanie 1Gb trva cca 20minut.
USB2.0 zatial nie je pouzitelne pod Linuxom - po case zostane proces ktory naraba s diskom v stave "uninterruptible sleep" - zrejme caka na I/O poziadavku, nezrusi ho ani kill -9.
Pokial pracuje data idu rychlejsie ako cez nezatazenu 100Mb siet. Na zalohy a prenos dat idealne.
Pokusim sa to rozchodit pod RH8, alebo vanilla 2.5 jadrom - budem informovat.
Skusane na radici http://abclinuxu.cz/hardware/ViewRelation?relationId=14456
info na www.qtec.info/13213
-------------------- dodatok
Uspech - pod RH7.3 jadrom 2.4.18-10 a radicom s chipom NEC (radic ST Lab USB2.0) funguje bezproblemov. Rychlost prenosu je cca 10MB/s