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I need a recommendation for SAN (Actually NAS) ethernet switches.

 

  Hi, we have one Dell blade chassis with 8 servers ----  connected to stacked switches (3750) with EtherChannels ----  to NetApp (Controller 1 and 2 accordingly). Unfortunately, Dell blade servers only supports 1Gbps for port and NetApp also supports 1Gbps for each port (ports are all ethernet, not FC

san

 

Questions

 

1) What kind of switch do you recommend? I know that it is not popular to use ethernet in SAN  I just recognized that we have NAS, what do you recommend switches for NAS?

not SAN, so any MDS 9000 series don't work because it supports limited ethernet ports (many FC ports). I need many ethernet ports at least 48 ports from each switch. I know Nexus is one of candidates, but want to double check. 

 

2) Most of vendors ask what kind of connection I have. I said usually just ethernet, not FC, not FCoE. Is it right?    I believe that since I found NAS, it is "Ethernet"

 

3) The reason that I am looking for different switches is there are huge packet dropped (outbound) in switches (outgoing toward both dell servers and netapp; incoming is ok) We recently moved PtoV so, it is possible that traffic volume was increased. But output doesn't give me lot of information like below. Do you have any recommendation for further t-shoot? 

 

 (connected interface to Dell)

GigabitEthernet2/0/34 is up, line protocol is up (connected) 
  Hardware is Gigabit Ethernet, address is 580a.20f1.db22 (bia 580a.20f1.db22)
  Description: Chassis8
  MTU 9000 bytes, BW 1000000 Kbit/sec, DLY 10 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported 
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:57, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 32453861
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 3853000 bits/sec, 364 packets/sec
  5 minute output rate 2275000 bits/sec, 368 packets/sec
     15864561667 packets input, 16858567695886 bytes, 0 no buffer
     Received 4347 broadcasts (6 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 6 multicast, 0 pause input
     0 input packets with dribble condition detected
     47326292220 packets output, 62942914503089 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures

 

(connected to NetApp)

Port-channel2 is up, line protocol is up (connected) 
  Hardware is EtherChannel, address is 2c3e.cfaa.af03 (bia 2c3e.cfaa.af03)
  MTU 9000 bytes, BW 3000000 Kbit/sec, DLY 10 usec, 
     reliability 255/255, txload 2/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is auto, media type is unknown
  input flow-control is off, output flow-control is unsupported 
  Members in this channel: Gi1/0/3 Gi2/0/1 Gi2/0/2 
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:01, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 3316452
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 6693000 bits/sec, 2048 packets/sec
  5 minute output rate 30028000 bits/sec, 2773 packets/sec
     107334585357 packets input, 140120529103340 bytes, 0 no buffer
     Received 5609191 broadcasts (407218 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 407218 multicast, 0 pause input
     0 input packets with dribble condition detected
     38961062194 packets output, 40437523739199 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

 

 

Thanks. 


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