Some question about SAN on HP 4400 EVA Post: 302957951

Sponsored Content

Special Forums Hardware Filesystems, Disks and Memory Some question about SAN on HP 4400 EVA Post 302957951 by cjcox on Friday 16th of October 2015 07:06:06 PM

10-16-2015

Registered User

So... generally for a minimal san, as you mentioned there is the storage, the switch and the host side.

I all of those case if the "holes" look like an empty rectangular hole, then those holes are missing SFP+ modules. In some cases you can purchase Twinax cables instead of going fiber to do this, in which case the SFP+ sides come with the cable, because your HP through and through, an HP rep can probabably see you such a cable. It will probably come out cheaper then individual SFP+'s and fiber cabling.

With all that said, the SFP+ is important, as vendors just don't generically handle SFP+'s. So make sure you get the right SFP+ for your devices. HP should be able to help.

And yes, you need connection from HBA (host) to switch and from storage to switch. Often times multiple for redundancy (multipath). You'll want multipath if this for enterprise use. If for home, then just single runs will do for playing around with SAN.

If going "discount" you probably would have done better with something more generic (like Nexsan) vs. an EVA. That way you have less problems with SFP's. My favorite is Qlogic switches, HBAs and Nexsan. But I know that Qlogic isn't going to popular anymore.

Today, I'd go Arista 10GBase-T, and go all copper Cat-6A for iSCSI. More generic, costs a lot less overall. But that's if I'm defining something new for the enterprise. If FC, then my choice (in the near past) would have been Qlogic HBAs, Qlogic switch (at least 8Gbit) and Nexsan. I'm a bit frustrated by the FC world right now, though I like it over iSCSI (better performing, easier to work with). Mainly because of all the SFP+ lock in.

FCoE? Suffers from too many of the same problems as iSCSI. To me these are just about equal. Theoretically easier to setup FCoE vs. iSCSI though.

And yes you can go straight from storage to host HBA. You dont' have to have a SAN.

cjcox

View Public Profile for cjcox

Find all posts by cjcox

9 More Discussions You Might Find Interesting

1. Linux Benchmarks

PowerMac 4400 YLD 3.0

CPU/Speed: PowerPC 603ev 200Mhz Ram: 92M EDO Ram Motherboard: Apple Bus: 2 PCI Cache: L1 32k and L2 256k Controller: ATA Disk: 2GB ATA Load: 1 user, running httpd, Xwin, various daemons Kernel: Linux 2.4.22-2f Kernel ELF?: ??? pgms: gcc versi�n 3.2.2 20030217 (Yellow Dog Linux 3.0 3.2.2-2a);...

2. HP-UX

Any EVA admin's out there?

I was conveniently excluded from some EVA8000 training, and now find myself with an EVA zoned, but no physical devices :( My ioscan appears as follows: ba 1 0/1 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782) fc 0 0/1/0/0 ...

3. Solaris

Thoughts/experiences of SAN attaching V880 to EMC SAN

Hi everyone, I wonder if I can canvas any opinions or thoughts (good or bad) on SAN attaching a SUN V880/490 to an EMC Clarion SAN? At the moment the 880 is using 12 internal FC-AL disks as a db server and seems to be doing a pretty good job. It is not I/O, CPU or Memory constrained and the...

4. AIX

Question about IBM San Ds4500

I have a question about SAN commands I have almost 15Tb of disk on my san but assigned and something else I have almost 11Tb There is a command to know, what its my real total storage capacity and another command to know how much I used .? Thanks again in advance

5. UNIX for Advanced & Expert Users

Can AIX 5.3 - 6 Boot From HP EVA 6000 SAN

Hi There, Has anyone had any luck with or know how to get AIX 5+ to boot from a HP EVA 6000 SAN? The servers used here will be P Class Blades My initial searches on this so far did not bring results so I am guessing this may not be possible on HP SAN's but please let me know if I am...

6. Red Hat

SAN/LVM question

Hey everyone. I am working on designing a logging solution for a deployment we have going out in a few months. Right now we have a single storage head end, connected via fibre to a SAN. Basically the plan is to create a number of smaller LUNs on the SAN, and then use LVM2 to handle concatenating...

7. Solaris

EVA storage HUNG / Solaris issue

Hi, I have a query , is it possible that few LUNs presented to the Solaris OS which are in the unlabeled state can hung EVA frame and cause it to get unresponsive ? please help. thanks.

8. AIX

GPFS initial setup, but perhaps this is a SAN/VIO question

I'm having some trouble getting a POC of GPFS up and running. I've read a couple install guides including a couple IBM pdfs but I'm getting stumped on something I think is fairly fundamental.... I'm trying to do this all on a single 795, right now only the VIOs have HBAs so all LUNs are pointed to...

9. HP-UX

SAN Migration question

Hi, I am very new to HP-UX, and we're going to be doing a SAN migration. We're going to take down the machine, and zone it to the new SAN. My question is, will the device names change and will that interfere with the LVM? If the new disks come in with different device names, how would I...

LEARN ABOUT HPUX

st_san_safe

st_san_safe(5)							     OBSOLETED							    st_san_safe(5)

NAME

       st_san_safe - determine whether access to tape device special files without the no-rewind-on-close option is allowed (OBSOLETED)

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
       or

DESCRIPTION

       Note: this tunable is obsoleted and has been renamed to beginning with release HP-UX 11i v3.

       This  tunable  notifies the tape driver whether it should allow access to device special files without the no-rewind-on-close option.  When
       this tunable is on the tape driver will fail any open on a tape device special file without the no-rewind-on-close option (that is, or with
       a status of

       The  tunable  allows  the  safe	sharing of tape devices in SAN tape backup solution configurations.  The disabling of device special files
       without no-rewind-on-close in a SAN tape backup solution configuration prevents the accidental sending of a rewind command  on  close  from
       HP-UX systems via standard tape commands like which would corrupt a backup in process.

   Who Is Expected to Change This Tunable?
       Anyone.

   Restrictions on Changing
       Changes to this tunable take effect immediately.

   When Should the Tunable Be Turned On?
       This tunable should be turned on if the system is going to be used in a SAN tape backup solution configuration.

   What Are the Side Effects of Turning the Tunable On?
       The  tape  driver  will	fail any open to a tape device special file that does not have the no-rewind-on-close option with a status of This
       behavior prevents the usage of any tape device special file without the no-rewind-on-close option.

   When Should the Tunable Be Turned Off?
       This tunable should be turned off if the system is not part of a SAN tape backup solution configuration or the  system  utilizes  will  not
       function unless it has access to device special files without the no-rewind-on-close option.

   What Are the Side Effects of Turning the Tunable Off?
       A rewind may be issued from this system accidentally on close possibly corrupting a backup being issued from another system on the SAN.

   What Other Tunables Should Be Changed at the Same Time?
       None.

WARNINGS

       All  HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases of
       HP-UX.

       Installation of optional kernel software, from HP or other vendors, may cause changes to tunable  parameter  values.   After  installation,
       some  tunable  parameters may no longer be at the default or recommended values.  For information about the effects of installation on tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by Hewlett-Packard.

SEE ALSO

       norewind_close_disabled(5), scsi_tape(7), scsimgr_estape(7).

							     Tunable Kernel Parameters						    st_san_safe(5)