This post is more than 5 years old
360 Posts
0
1698
Can long wave signal connect to HBA directly?
Dear All,
Can long wave signal connect to HBA directly?
or it need to receive short wave signal only?
Thank you for any reply.
Dennis Dai
This post is more than 5 years old
360 Posts
0
1698
Dear All,
Can long wave signal connect to HBA directly?
or it need to receive short wave signal only?
Thank you for any reply.
Dennis Dai
Top
RRR
1 Rookie
1 Rookie
•
5.7K Posts
1
February 26th, 2010 01:00
I've never seen HBA's (or storage systems) with long wave SFP's in it and AFAIK those things don't even exist. You'll need some sort of switch that will handle transmitting over long distances (buffer credits and so on). You could use a small switch with a limited amount of SFP's to save some money or look for specific 2 port devices that will translate LW to SW for you.
Darmin_M
138 Posts
0
February 26th, 2010 01:00
RRR is correct.
You would need a switch to handle this for you.
RRR
1 Rookie
1 Rookie
•
5.7K Posts
0
February 26th, 2010 01:00
Thank you, thank you, you've been a wonderful crowd
dynamox
2 Intern
2 Intern
•
20.4K Posts
0
February 26th, 2010 04:00
AbhishekKS
71 Posts
0
June 30th, 2010 00:00
Hi Dennis,
Long Wave links are used for ISLs where the switches are placed at greater distance rather than at the same site. It is between the switches and not for device to switch or switch to device.
Allen Ward
2.1K Posts
0
July 8th, 2010 11:00
Of course that is all assuming that we are talking purely Open Systems connectivity. I have longwave SFPs in the FICON FE directors on my DMX3s and in the director cards in my M6140 as well as the FICON express cards in the IBM Z10 (basically emulex HBAs for the mainframe).
While in the Open Systems world longwave is typically only used for distance connectivity, there is no reason (other than dollars and good sense) why it couldn't be used almost anywhere that the SW connectivity is typically used. It is available, but would be somewhat akin to buying a Ferrari to go shopping or a transport truck so you can take all your camping gear with you on a trip. Not exactly practical unless you really need it.
AbhishekKS
71 Posts
0
July 9th, 2010 06:00
Yeah, thats pretty much true.