> solutia este viabila (daca intradevar ai nevoie de el)
> vezi mai jos.
> Sistemul este functional ...si este in Romania !!!
> 6 porturi in switchul mare de care sunt legate 3 switchuri(2 Cisco + 1
> HP) + 3 calcule.
> Merge si pe linux.
> Placile sunt SMC-uri. (300 para bucata)
> Vine cu drivere ptr linux.
SMC rocks pe parte de Gbit. Nu pot zice asta despre intel
(cele facute de Compaq sau de IBM) care sug groaznic si costa
cu mult mai mult decat dublu la SMC. BTW, sunt PCI64?
Apoi catalystul ala e batranel... tine backplane-ul
la doua ping flooduri de pe un module pe altul ? Ce packet
rate scoate?
In plus Gigabit EtherChannel imi baga niste delayuri cretine
de tip "dinti de fierastrau" in reprezentare grafica
(la cam fiecare al 11-lea pachet apare un delay de cateva zeci de ms
care scade greu cam in 3-4 pachete). Si in al treilea rand mi se pare
o tampenie ideea de computer legat pe gigabit, mai degraba faci
un etherchannel pe 2-4 adaptere de 100 pt ca nu te tin hardurile la
cam 128Mbytes/sec nici impuscat :) Orice LVD decent tine cam 35Mbytes/sec.
Uite, daca vrei cifre (urmeaza ceva lung si plicticos :( ) poti
sa iti dai seama ca nu zic chiar tampenii...
Daca are cineva niste statistici de lvd-uri in raid hardware
(al meu e soft deocamdata) care sa dea mai bine decat cele
din soft il rog frumos sa mi le dea.
root@spy:~# hdparm -tT /dev/sda
/dev/sda:
Timing buffer-cache reads: 128 MB in 0.74 seconds =172.97 MB/sec
Timing buffered disk reads: 64 MB in 1.85 seconds = 34.59 MB/sec
root@spy:~# hdparm -tT /dev/md0
/dev/md0:
Timing buffer-cache reads: 128 MB in 0.64 seconds =200.00 MB/sec
Timing buffered disk reads: 64 MB in 0.93 seconds = 68.82 MB/sec
root@spy:~# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: IBM-PSG Model: ST336704LC !# Rev: B232
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: IBM-PSG Model: ST336704LC !# Rev: B232
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 08 Lun: 00
root@spy:~# cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 6.1.13
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/255 SCBs
Channel A Target 0 Negotiation Settings
User: 160.000MB/s transfers (80.000MHz DT, offset 255, 16bit)
Goal: 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
Curr: 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
Channel A Target 0 Lun 0 Settings
Commands Queued 195872
Commands Active 0
Command Openings 64
Max Tagged Openings 253
Device Queue Frozen Count 0
Channel A Target 1 Negotiation Settings
User: 160.000MB/s transfers (80.000MHz DT, offset 255, 16bit)
Goal: 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
Curr: 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
Channel A Target 1 Lun 0 Settings
Commands Queued 134085
Commands Active 0
Command Openings 253
Max Tagged Openings 253
Device Queue Frozen Count 0
root@spy:~# cat /proc/net/PRO_LAN_Adapters/eth2.info
Description Compaq Gigabit Ethernet Server Adapter
Part_Number 010133-001
Driver_Name e1000
Driver_Version 3.0.16
PCI_Vendor 0x8086
PCI_Device_ID 0x1000
PCI_Subsystem_Vendor 0x0e11
PCI_Subsystem_ID 0xb123
PCI_Revision_ID 0x03
PCI_Bus 1
PCI_Slot 6
IRQ 18
System_Device_Name eth2
Current_HWaddr 00:08:C7:86:E2:8B
Permanent_HWaddr 00:08:C7:86:E2:8B
Link up
Speed 1000
Duplex full
State up
--
Stefan Laudat
CCNA & CCAI
-------------
"Those skilled at the unorthodox are infinite as heaven and earth,
and as inexhaustible as great rivers. When they come to an end,
they begin again, like days and months. They die and are reborn,
like the four seasons."
-- Sun Tzu, The Art of War
---
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