02-25-2007
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 internal disks are mirrored in a RAID 0+1 configuration.
I have 2 choices to make as we intend to increase the number of db's running on the machine(s) - these options are:
1 - To directely attach the servers to the EMC SAN with FC HBA's.
2 - To purchase StoredgeTek SCSI shelves and use SVM to manage the disks (FCAL is overkill to be honest).
I know there are all sorts of ways the SAN can stripe and chop up the disks to allow for RAID 5 etc and that SVM will make a pretty good job of doing the same on the SCSI shelves.
However I do not know if there are any significant technical advantages/disadvantages for either of these two methods.
Does anyone have any thoughts on this?
My own concerns are the reliability of the connection to the SAN as apposed to directly attaching the SCSI shelves. I feel keeping the SUN kit self-contained may be preferable in the long run.
Appreciate the time taken to read and reply.
Si
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello all,
I have looked at the entire posting that have SAN in it and I'm still fuzzy on how SAN works. I understand that every disk array can be access from any server that needs it, but is there software that is install or NFS mount type situation. One post stated that if your format command... (7 Replies)
Discussion started by: larry
7 Replies
2. AIX
hi
We have 2 AIX nodes running with HACMP and all of them connected to SAN,
Our shared storage is shark; I need to create shared volume group and I need the HACMP take a ware of it.
Regards (1 Reply)
Discussion started by: h2aix
1 Replies
3. Solaris
Hi:
I am in the process of configuring the SAN for Solaris to host 6 oracle 9i databases. We have 30 -146 GB disks stiped with RAID 10 for SAN. Of which 11 are dedicated for databsaes related things. Then we have 2 v880 Sun Servers with 16 -73 GB disks and 24 GB memory.
The questions... (1 Reply)
Discussion started by: oracle_dba
1 Replies
4. IP Networking
Hi
I like to learn and practice SAN, iSCSI. Could you sugges the appropriate tutorial and small tasks to practice SAN.
Thankyou (1 Reply)
Discussion started by: kingskar
1 Replies
5. AIX
This may sound like an absolute rookie question, and it is.
I have been working on Migrating our HP and Solaris servers to the new EMC SAN and know the routines backwards.
Now we've suddenly got a new IBM server and I don't even know how to check if it is connected to the switch.
Can someone... (1 Reply)
Discussion started by: ronellevan
1 Replies
6. Solaris
Hi
I have a 1TB external drive that I want to attach to a SunFire v880 server which runs on Solaris 9. After attaching the external drive what commands should I issue so that the drive will be seen by the server? (7 Replies)
Discussion started by: rahmantanko
7 Replies
7. AIX
Has anyone tried SAN to SAN mirroring on IBM DS SAN Storage.
DS5020 mentions Enhanced Remote Mirror to multi-LUN applications
I wonder if Oracle High availibility can be setup using Remote Mirror option of SAN ? (1 Reply)
Discussion started by: filosophizer
1 Replies
8. Solaris
Hi All,
I have server : Sun-Fire-V490 configured with Solaris 10 zfs
..
and I have configured three mirror the third one from EMC
storage.
root@server # zpool status -v
pool: rpool
state: ONLINE
status: The pool is formatted using an older on-disk format. The pool can
... (8 Replies)
Discussion started by: top.level
8 Replies
9. Filesystems, Disks and Memory
hi! i got a rhel 6.3 host that already have an xfs filesystem mounted from a SAN (let's call it SAN-1) whose size is 9TB.
i will be receiving another SAN (let's call it SAN-2) storage of 15TB size. this new addition is physically on another SAN storage. SAN-1 is on a Pillar storage while the new... (6 Replies)
Discussion started by: rino19ny
6 Replies
LEARN ABOUT HPUX
st_ats_enable
st_ats_enable(5) File Formats Manual st_ats_enable(5)
NAME
st_ats_enable - determine whether to reserve a tape device on open
VALUES
Default
Allowed values
Recommended values
DESCRIPTION
Note: this tunable was named in releases prior to HP-UX 11i v3.
This tunable notifies the stape or estape driver whether it needs to reserve a tape device on open and subsequently release it on close.
When this tunable is on, the stape or estape driver will attempt to reserve any tape device on open. The driver has a few tape devices
flagged as suitable devices for this functionality including: DLT 8000, DLT 7000, STK 9840, HP Ultrium, and others. DDS drives are not
flagged for this functionality.
The tunable allows the safe sharing of tape devices in multinode configurations like MC/ServiceGuard's Advanced Tape Sharing. The auto-
matic reserve and release protects the tape device from being accessed from multiple nodes, which would corrupt a backup. If the reserve
portion of the stape or estape driver's open routine fails, a status of is returned.
Who Is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect immediately and are used during the next open or close.
When Should the Tunable Be Turned On?
This tunable should be turned on if the system is going to be used in an MC/ServiceGuard's Advanced Tape Sharing configuration or the user
wants the stape or estape driver to use automatic reserve and release on open and close for multinode manageability.
What Are the Side Effects of Turning the Tunable On?
A reserve is sent to the tape device by the stape or estape driver on open and a release is sent on close. No other initiator or HBA will
be able to access the tape device while it is opened on another initiator or HBA.
When Should the Tunable Be Turned Off?
This tunable should be turned off for any SAN tape sharing solution configuration other than ATS. Most multinode backup applications (for
example, Omniback) manage device reservation themselves, and any interference by the stape or estape driver may produce problems. This
tunable should also be turned off for any multiplatform SAN configuration to keep tape access across platforms more uniform.
What Are the Side Effects of Turning the Tunable Off?
Unauthorized access from another initiator might interfere with any current tape operation.
What Other Tunables Should Be Changed at the Same Time?
None.
EXAMPLES
Query the current value of the tunable:
Set the value of the tunable to
To save the value of the tunable across reboots:
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 HP.
SEE ALSO
scsi_tape(7), scsimgr_estape(7).
Tunable Kernel Parameters st_ats_enable(5)