SC 3.2 and iSCSI RAID

Does SC 3.2 support iSCSI interface to a RAID? To give a real world example: Can I set up a cluster of two 5220 servers using StorageTek 2510 RAID as a shared storage?

From the pathname of your passw file, I assume it is on a global fileystems, and not locally.
This global filesystem very probably has a HAStoragePlus resource associated with it.
Your HA LDOM resource must have a "Resource_dependcies" on that HAStoragePlus resource. Otherwise the clrs create command must assume, that - as the global filesystem has not been mounted yet, the passwd file does not exist. If this is not true for the local node, what about the other node?
The error message, though, is a bit strange.
Hartmut

Similar Messages

RAC and iSCSI thoughts

Hi,
I'm in the early stages of designing a RAC installation and am wondering if iSCSI is a possibility for the shared storage. As far as I have been able to tell, the only certified shared storage systems are all FC based.
I'm wondering if anyone here has any thoughts/experiences with RAC and iSCSI that they'd like to share.
regards
iain

I built my iSCSI solution using linux and off the shelf raid solutions - originally just using gig-e cards, however i have upgraded to the accelerated cards (recognizes iSCSI and offloads the host CPU of procesing) and it works great.
There are some really affordable solution either way these days. Fibre Channel is still more expensive on the drive side considering moderm SATA drives are catching up in performance.
I built a 3.2tb iSCSI network that is shared between 6 servers running a web index of 100milliion pages with about 60k queries a day and it works great. I was able to roll it out on the colo's switches without getting specialized cabinets, fiber channel switches and only sent in upgraded nics.. sooner or later as the queries increase i'll send in a seperate gigE switch - however its just on its own vlan now.
For me it was a lot of work since i built a system from scratch - today lots of vendors offer off the shelf components are bargain basement prices compared to when i ventured into it :)

Hello. I have a problem with OEL 6.5 and ocfs2. When I mount ocfs2 with mount -a command all ocfs2 partitions mount and work, but when I reboot no ocfs2 partitions auto mount. No error messages in log. I use DAS FC and iSCSI FC.

Hello.
I have a problem with OEL 6.5 and ocfs2.
When I mount ocfs2 with mount -a command all ocfs2 partitions mount and work, but when I reboot no ocfs2 partitions auto mount. No error messages in log. I use DAS FC and iSCSI FC.
fstab:
UUID=32130a0b-2e15-4067-9e65-62b7b3e53c72 /some/4 ocfs2 _netdev,defaults 0 0
#UUID=af522894-c51e-45d6-bce8-c0206322d7ab /some/9 ocfs2 _netdev,defaults 0 0
UUID=1126b3d2-09aa-4be0-8826-0b2a590ab995 /some/3 ocfs2 _netdev,defaults 0 0
#UUID=9ea9113d-edcf-47ca-9c64-c0d4e18149c1 /some/8 ocfs2 _netdev,defaults 0 0
UUID=a368f830-0808-4832-b294-d2d1bf909813 /some/5 ocfs2 _netdev,defaults 0 0
UUID=ee816860-5a95-493c-8559-9d528e557a6d /some/6 ocfs2 _netdev,defaults 0 0
UUID=3f87634f-7dbf-46ba-a84c-e8606b40acfe /some/7 ocfs2 _netdev,defaults 0 0
UUID=5def16d7-1f58-4691-9d46-f3fa72b74890 /some/1 ocfs2 _netdev,defaults 0 0
UUID=0e682b5a-8d75-40d1-8983-fa39dd5a0e54 /some/2 ocfs2 _netdev,defaults 0 0

What is the output of:
# chkconfig --list o2cb
# chkconfig --list ocfs2
# cat /etc/ocfs2/cluster.conf

AFP and Xserve RAID very SLOOOOW

Recently we have been having problems with AFP pegging the Xserve RAID activity lights. Xserve RAID Disk access is very slow.
Machine Specs:
Dual 2.3 GHZ G5 Xserve
1GB RAM (recently downgraded because of memory problems after a power outage)
1x80GB Xserve drive module
3TB Xserve RAID 5
Xserve RAID has been upgraded to 1.5 FW and has both ethernet connections connected.
The whole story is we had a power outage last week. The servers all came back up fine. Throughout the day we noticed that the file server was acting strange. We checked server monitor and it said that RAM slot 3&4 had problems. We opened up System Profiler and it reported that modules 2&3 were only 256MB! (These are 512MB modules). We brought the machine down and pulled the modules. The machine is now at 1GB of memory with more coming. The next day the machine was incredibly slow and the RAIDs access lights were pegged. Also something was pulling all free memory into inactive memory. After trial and error I've found that if I turn off AFP the RAID is no longer pegged and the memory goes back to normal. I thought AFP was the problem and did a complete rebuild of the server last night. This morning the same thing is happening. Also the logs show nothing is wrong.
All of our Macintosh users are Mobile accounts over AFP. We have around 60 Macintosh users. All of our PC users connect using SMB. We have around 20 PC users. All of our network users work off of the file shares.
Thanks for any and all help,
-dustin

Check so that the Xserve RAID diskcache settings are not reset/off.
I have had to take apart the RAID controllers and putting them back togheter again to alleviate slowness/"malfunction" making a couple of RAIDs operating like normal again.
I use Helios Lantest http://www.helios.de/ and XRG to measure/stress disks locally and over the network to see if they are working correctly.

Looking for some ideas for setting up and xServe RAID

Everyone,
Here is what I would to do. I have a new xServe and 7TB RAID. I would like to set all of my end users up with Portable Home Directories. They all have laptops and I would like to use their PHD as my backup source. I would set them to sync in the background a couple of times per day and then write to tape at night.I have about 60 end users. I would also like to use the same xServe and RAID as my Kerio mail server and mail store. What I am looking for is some ideas of how to go about setting up the RAID. I was orginially thinking of setting up as one big RAID 5 using all 14 drives. What I would like to know is what is the number of drives that would need to fail that would render the RAID unrebuildable? I am now thinking about splitting the RAID into two 7 drives in RAID set up as RAID 1+0.
I am not sure if I phrased a lot of this currently, but here is quick recap of what I would like to know. What would be the best way to set up a 7TB RAID to store PHD and my Kerio mail store that provides me the most redudant and fastest acccess.
Thanks in advance.
Sincerely,
Daniel Krajc

Daniel,
I'd suggest a 6 disk RAID 5 plus a hot spare for each side. It will give you about 2.4 TB capacity per side (4.8 total), and it can tolerate 2 drive failures per side without losing data, provided there is sufficient time between failures for the RAID set to automatically rebuild on the hot spare. This window is 8-12 hours.
Note with Xserve RAID the two sides are totally independent in the data path -- it will look like 2 separate LUNs. If you want to combine these at the host level, as RAID 0 or RAID 1 to look like a single volume, you can. But the Xserve RAID will not combine them itself... the RAID controllers are independent... it might as well be two separate RAID volumes in the same chassis.
I assume you'll plug this into an Xserve that is serving as an Open Directory server and a file server?

Ask the Expert: Cisco UCS Troubleshooting Boot from SAN with FC and iSCSI

Welcome to this Cisco Support Community Ask the Expert conversation. This is an opportunity to learn and ask questions about Cisco UCS Troubleshooting Boot from SAN with FC and iSCSI with Vishal Mehta and Manuel Velasco.
The current industry trend is to use SAN (FC/FCoE/iSCSI) for booting operating systems instead of using local storage.
Boot from SAN offers many benefits, including:
Server without local storage can run cooler and use the extra space for other components.
Redeployment of servers caused by hardware failures becomes easier with boot from SAN servers.
SAN storage allows the administrator to use storage more efficiently.
Boot from SAN offers reliability because the user can access the boot disk through multiple paths, which protects the disk from being a single point of failure.
Cisco UCS takes away much of the complexity with its service profiles and associated boot policies to make boot from SAN deployment an easy task.
Vishal Mehta is a customer support engineer for Cisco’s Data Center Server Virtualization TAC team based in San Jose, California. He has been working in the TAC for the past three years with a primary focus on data center technologies such as Cisco Nexus 5000, Cisco UCS, Cisco Nexus 1000v, and virtualization. He has presented at Cisco Live in Orlando 2013 and will present at Cisco Live Milan 2014 (BRKCOM-3003, BRKDCT-3444, and LABDCT-2333). He holds a master’s degree from Rutgers University in electrical and computer engineering and has CCIE certification (number 37139) in routing and switching and service provider.
Manuel Velasco is a customer support engineer for Cisco’s Data Center Server Virtualization TAC team based in San Jose, California. He has been working in the TAC for the past three years with a primary focus on data center technologies such as Cisco UCS, Cisco Nexus 1000v, and virtualization. Manuel holds a master’s degree in electrical engineering from California Polytechnic State University (Cal Poly) and VMware VCP and CCNA certifications.
Remember to use the rating system to let Vishal and Manuel know if you have received an adequate response.
Because of the volume expected during this event, our experts might not be able to answer every question. Remember that you can continue the conversation in the Data Center community, under subcommunity Unified Computing, shortly after the event. This event lasts through April 25, 2014. Visit this forum often to view responses to your questions and the questions of other Cisco Support Community members.

Hello Evan
Thank you for asking this question. Most common TAC cases that we have seen on Boot-from-SAN failures are due to misconfiguration.
So our methodology is to verify configuration and troubleshoot from server to storage switches to storage array.
Before diving into troubleshooting, make sure there is clear understanding of this topology. This is very vital with any troubleshooting scenario. Know what devices you have and how they are connected, how many paths are connected, Switch/NPV mode and so on.
Always try to troubleshoot one path at a time and verify that the setup is in complaint with the SW/HW interop matrix tested by Cisco.
Step 1: Check at server
a. make sure to have uniform firmware version across all components of UCS
b. Verify if VSAN is created and FC uplinks are configured correctly. VSANs/FCoE-vlan should be unique per fabric
c. Verify at service profile level for configuration of vHBAs - vHBA per Fabric should have unique VSAN number
Note down the WWPN of your vhba. This will be needed in step 2 for zoning on the SAN switch and step 3 for LUN masking on the storage array.
d. verify if Boot Policy of the service profile is configured to Boot From SAN - the Boot Order and its parameters such as Lun ID and WWN are extremely important
e. finally at UCS CLI - verify the flogi of vHBAs (for NPV mode, command is (from nxos) – show npv flogi-table)
Step 2: Check at Storage Switch
a. Verify the mode (by default UCS is in FC end-host mode, so storage switch has to be in NPIV mode; unless UCS is in FC Switch mode)
b. Verify the switch port connecting to UCS is UP as an F-Port and is configured for correct VSAN
c. Check if both the initiator (Server) and the target (Storage) are logged into the fabric switch (command for MDS/N5k - show flogi database vsan X)
d. Once confirmed that initiator and target devices are logged into the fabric, query the name server to see if they have registered themselves correctly. (command - show fcns database vsan X)
e. Most important configuration to check on Storage Switch is the zoning
Zoning is basically access control for our initiator to targets. Most common design is to configure one zone per initiator and target.
Zoning will require you to configure a zone, put that zone into your current zonset, then ACTIVATE it. (command - show zoneset active vsan X)
Step 3: Check at Storage Array
When the Storage array logs into the SAN fabric, it queries the name server to see which devices it can communicate.
LUN masking is crucial step on Storage Array which gives particular host (server) access to specific LUN
Assuming that both the storage and initiator have FLOGI’d into the fabric and the zoning is correct (as per Step 1 & 2)
Following needs to be verified at Storage Array level
a. Are the wwpn of the initiators (vhba of the hosts) visible on the storage array?
b. If above is yes then Is LUN Masking applied?
c. What LUN number is presented to the host - this is the number that we see in Lun ID on the 'Boot Order' of Step 1
Below document has details and troubleshooting outputs:
http://www.cisco.com/c/en/us/support/docs/servers-unified-computing/ucs-b-series-blade-servers/115764-ucs-san-tshoot-00.html
Hope this answers your question.
Thanks,
Vishal

Migrade old NW-cluster to VmWare and iSCSI

That's the job to be done,
question is just; which way to go;
Setup today is;
2x Single-CPU XeonServers, both connected
to 2xPromise 15HD/Raidkabinetts over 160mb SCSI.
This install beeing approx 5 years old and is getting slow and full.
Idea is to buy new, fast 6core Intel servers, run VmWare which makes
use of the power and make our life easier....
One question Im wondering about and have a guess regarding the answer
to is;
iSCSI based storage for these servers, should it be assigned and
supplied through VmWare or should the virtual NWserver running under
VmWare connect directly to the iSCSI storage ?
Usually, having an additional step on the way should be overhead, but
with regards to support for load-balancing NIC's, memory,etc,, my
guess is that the opposite could be true here; meaning that the VmWare
box should handle all storage and NW getting it's storage through
VmWare. But,, again just my guess...any input ?
Another question of course is Netware Vs Linux OES.
We have long time experience with NW and find our way around it well,
the Linux part is still something we really don't feel that at home
with. The install's of OES on Linux we've done for lab, test's etc
have allways felt rather unfinished. One could think that beeing from
the Novell/Netware camp, a logical step should be Linux/OES but
....Even when following the online doc's to do a basic test-setup works
quite ..bad...to much manual fixes getting stuff to work, to much
hazzle getting registration and updates to work....
Still, going virtual might be a way to make it easier switching to
OES/Linux since it'll be easier having a backup/image each time one
try do update,fix,,etc,,etc..
In the end, the needs are basic, one Groupwise server and one
FileServer. Going virtual enables us to over time migrate other
resources to....

Thanks 4 the quick reply Massimo,
Well, iSCSI or not, the other part of the question.
Time IS probably here to replace Netware, that much is obvious.
With the existing setup, we got working backups,
with our W2k/03/08, we got working backups and disaster recovery plans
Moving forward, using OES for us at least, seems a more difficult path
while any move from Netware today would probaby give us better
throughput. Using VmWare seems like a managable solution since do
updates/upgrades and backups could be done easily. To have a image to
revert to if any update goes wrong is much easier/faster than a
re-install each time....
On Mon, 22 Nov 2010 08:54:15 GMT, Massimo Rosen
<[email protected]> wrote:
>Hi,
>
>[email protected] wrote:
>>
>> That's the job to be done,
>> question is just; which way to go;
>>
>> Setup today is;
>> 2x Single-CPU XeonServers, both connected
>> to 2xPromise 15HD/Raidkabinetts over 160mb SCSI.
>>
>> This install beeing approx 5 years old and is getting slow and full.
>
>Hmmmm....
>
>> Idea is to buy new, fast 6core Intel servers, run VmWare which makes
>> use of the power and make our life easier....
>> One question Im wondering about and have a guess regarding the answer
>> to is;
>>
>> iSCSI based storage for these servers, should it be assigned and
>> supplied through VmWare or should the virtual NWserver running under
>> VmWare connect directly to the iSCSI storage ?
>
>If your current setup is slow, you shouldn't be using iSCSI at all. It
>won't be much faster, and iSCSI is becoming increasingly stale
>currently, unless you have 10GBE. And even then it isn't clear if iSCSI
>over 10GBE is really much faster than when using 1GB. TCP/IP needs a lot
>of tuning to achieve that speed.
>
>>
>> In the end, the needs are basic, one Groupwise server and one
>> FileServer. Going virtual enables us to over time migrate other
>> resources to....
>
>I would *NEVER* put a Groupwise Volume into a VMDK. That said, my
>suggestion would be OES2, and a RDM at the very least for Groupwise.
>
>CU,

On-board RAID and PCI RAID controller

Hello everybody,
I am new to the forum. So, please excuse me if that topic was already covered...
I have MSI MAX2-LR (MS-6398E) board. It works just fine, no problem so far. Though I have 2 problems with add-on cards:
1. I was planning to use on-board RAID and additional PCI RAID controller = FastTrack 100 TX2 to cover 6 hard drives into 2 mirrored sets: 4drives one and 2 drives the other.
It doesn't work! I can use either on-board RAID or PCI RAID. As soon as I have any drive connected to on-board RAID, the PCI RAID disappeares. If I have no drives connected to on-board RAID, I can see both RAID controllers, they have different I/O and IRQs, and PCI RAID is working just fine. If only I connect one drive to the on-board RAID, it gets activated on startup, and the other one disappeares. :O
I believe it's a BIOS bug. I wander, if that can be fixed easily????? :D
2. I have a new Matrox Video card = Parhelia. It doesn't work in AGP slot! System doesn't recognize it, and beeps non-stop. I am dealing with Matrox Tech Support on that matter. ?(
Maybe, it's a known issue, and somebody can save me time by telling what's that about.
Appreciate any imput. Have a great weekend.!!! :]

Hey I also have the same Raid card and also the Matrox Parhelia, and I see that you also have some problems with the card I got also problems with the card, but they couldnt help me at theire forums (http://forum.matrox.com/mgaforum/Forum10/HTML/005085.html), I hope we have got more luck here :D

Hardware config and componenets : raid, gpu and monitor choices

Right,
I've almost finalised my decisions about a new build I'm putting together to use cs4 design premium prgrammes (mainly photoshop, InDesign, Illustrator, fireworks and flash) and in the near future 3d Max and possibly a video editing programme.
There are some things I'm stuck with for now; Motherboard and cpu, and some things I have a few questions about: raid 0, gpu and monitor choices. I appreciate this is a long post - but any feed-back would be appreciated.
MOTHERBOARD AND CPU
The motherboard and cpu were originally intended for a gaming pc:
MSI DKA790GX Platinum Motherboard
AMD phenom x4 9950 black edition
This motherboard and cpu are far better than any other I've had at my disposal when it has come to working with adobe programmes (CS2). So although
- I will only be able to go up to 8gb of ddr2 800mhtz ram (apparently the motherbioard becomes unstable with 8 gb 1066 ddr2)
- I do not have a motherboard that takes 2 6+ core cpus
From what I've seen of reviews on these components, at the moment, I'm quite happy with what I've got for both cs4 and 3d max use.
Besides, in the last few weeks I've learnt there are other things I can do to get maximum leverage out of a build comprising these components.
HDD CHOICE FOR RAID 0
I've read Harms generic guideline for disk setup here
http://forums.adobe.com/thread/662972?start=0&tstart=0
I gather that this guide is principally for optimum running when video editing. But I also gather that the performance enhancement of raid 0 compared to no raid will be beneficial for both photoshop and 3d Max. 4 discs with 2 in raid is what I was thinking of going for.
Discs I have or am thinking of buying:
1. I have 1 160gb WD ide 8mb cache hdd WD1600AAJB
2. I have 1 500gb WD Caviar blue SATA 16 mb cache hdd (WD500AAKS)
3. For the raid I'm thinking of buying 2x 1tb Samsung SpinPoint F3 7200rpm 32mb cache drives for £45.74 each
These are obviously highly rated as raid drives in these forums and I can't find anything smallar than a 1tb version of these drives at the shop I plan to order from – or is 1tb all they come in?
1st disc for OS and programmes
When going to the trouble of setting up raid is it acceptable to use an ide disc for the OS and programmes? I ask this because the 160gb WD hdd mentioned above has hardly been used....
If the ide drive is not approved of I'm thinking of buying either
1. A 500gb Seagate Barcude 7200.12 16mb cache sata 2 drive for £29.73 or
2. A 500gb Hitachi Deskstar 7K1000.C 7200rpm 16mb cache driver for £29.30 or
3. A 160gb samsung SpinPoint 7200rpm 8mb cache drive for 24.96
I know the Seagate and Hitachi are huge drives for the principal purpose of storing the OS and programmes but they both have 16mb cache and are only a few pounds more than the 160gb Samsung drive with only 8mb cache
Or
considering I'm going for F3 spinpoint for the raid discs would it be better, in terms of compatibility between the drives, to go for a spinpoint 8mb cache for the OS and programme discs
What should be my biggest concern here – compatibility between the discs or a higher cache on the disc - or considering they are all the same speed (7200rpm) does the cache not matter that much?
2nd disc for page file, media cache
I was thinking of dedicating the 500gb WD I have for these purposes. I've read in this forum that the WD drives are not that reliable when it comes to raid arrays – apart from that they seem to have a good reputation.
3-4th discs for raid 0
My mind is pretty much made up on the Samsung SpinPoint F3's
Partitions
Because there are a huge number of gb's in this set up I'm thinking of partioning the 1st and second discs so that in addition to using them for 'the operating system and programme files' and 'page file and media cache' their second partitions can be used to backup the data stored in the raid array.
Is it good practice to partition dedicated discs in this way?
THE GPU
Due to it's reletive cheapness, wide spread use and endorsement amongst gamers and workstation users alike, first of all I was swayed towards the 480GTX and using quadro driver hacks. But I couldn't get the number of ''risk factor' forum threads concerning making a GTX think its a quadro – particularly when it comes to using 3d max - out of my head. Even without the hacks there are a high percentage of grissly stories out there concerning the 480s and 3d max compared to workstation cards and 3d max. So I've decided that because I have the budget to get a workstation card (an ATI V7800) for 'just' £134 more than a GTX480 (£424 compared to £293) then for the peace of mind of more stable drivers, when getting to grips with a complex new programme, I might as well go for it and pay that bit extra.
I've had a good look at both the ATI V7800 and the PNY QUADRO 4000.... the differences between stream versus cuda and how these cards perform when rendering 3d programmes..... I started vearing towards the V7800 when I realised that when it came to rendering it was being compared very favourably with the quadro FX5800 let a lone the much cheaper quadro 4000.... Plus with the disc set up I am now thinking of I can buy the V7800 plus all the discs talked about above for £10 less than I can find the quadro 4000 for alone.
The only thing I'm concerned about is the V7800's compatibility with the cs4 design premium suite.
This page indicates that although some of these cards were released after cs4 they are supported by it.
http://kb2.adobe.com/cps/405/kb405445.html
Would it be wrong of me to suppose that, because the new V7800 is a work station graphics card, it will be supported by cs4?
What difference will it make if it isn't supported?
Having said that the quadro 4000 isn't listed as supported on this page either....
What would be your choice between the quadro 4000 and ATI V7800?
THE MONITOR
The monitor I'm looking at the 22” Dell 2209WA eIPS..... Although older (2008 vs 2009) the slightly larger 24”Dell 2408WFP has also caught my eye due to the higher contrast ratio (1300:1 vs 1000:1) and that this increased contrast ratio means it is capable of displaying 110 percent of the NTSC gamut as opposed to 86% with the the 2209WA.
I'm familiar with monitor on the 2006 dell XPS M1710 laptop and am very impressed with colour fidelity. The 2408WFP does require more calibration tweaking by the sound of it....
Anyone any experince of either of these monitors?
I'm off to the gym for an hour or so - I'll be back in a couple of hours

My strong advice: Don't skimp on price on hard drives.
Get high MTBF RAID edition drives (e.g., Western Digital RE-series drives).
http://www.wdc.com/en/products/products.aspx?id=30
In my main workstation I currently have two 1 TB WD RE3 drives that have been spinning in a RAID 0 configuration 24/7 with ZERO problems for a year now.
I figure one wants to minimize the chance of losing one's data down the road. How much would it cost you in time, effort, and lost work to recover your data from a backup if you should lose your hard drive?
Top-end drives can fail, sure, but the MTBF numbers say that the chances are much smaller than with "cheap" drives. And the RAID edition drives have additional features, such as vibration reduction, that differentiates them from lesser drives.
Ask yourself, why would one drive be cheaper than another? Poorer quality materials? Not as much quality control?
Another bit of info: Search this forum for "quadro". It seems that these expensive video cards may be seeing more trouble with Photoshop than you might expect. Some of the less expensive cards, that may have had more OpenGL testing (e.g., to support gaming) might be better choices for use with Photoshop. Personally I prefer ATI.
-Noel

Fault Tolerance of NFS and iSCSI

Hello,
I'm currently designing a new datacenter core environment. In this case there are also nexus 5548 with FEXs involved. On this fex's there are some servers which speak NFS and iSCSI.
While changing the core component there will be a disruption between the servers.
What ks the maximim timeout a NFS or iSCSI protocoll can handle while changing the components. Maybe there will be disruption for a maximimum of 1 sekond.
Regards
Udo
Sent from Cisco Technical Support iPad App

JDW1: In case you haven't received the ISO document yet, the relevent section of the cited ISO 11898-2:2003 you want to look at is section 7.6 "Bus failure management", and specifically Table 12 - "Bus failure detection" and Figure 19 - "Possible failures of bus lines".

Need help with RAID Card and degraded Raid-5 errors

Dear all,
I recently purchased a used Apple RAID card for my 2008 Mac Pro 8-Core. The installation went smooth, the card was immediately recognized and the battery reconditioned within one night.
So I started setting up a Raid Set with the 4 identical drives which I already used before as a software Raid. But each time the Raid Level-5 Volume is created, somewhat later the status turns red and the Raid is listed as "degraded"!
A closer look at log reveals:
+19:42:54 Drive carrier 00:01 inserted+
+19:42:27 Background task aborted: Task=Init,Scope=DRVGRP,Group=RS1+
+19:42:27 Degraded RAID set RS1 - No spare available for rebuild+
+19:42:26 Degraded RAID set RS1+
+19:42:22 Drive carrier 00:01 removed+
+15:10:57 Created volume “R1V1” on RAID set “RS1”+
So it seems that the drive from Bay 1 somehow gets lost (removed) a few hours after the volume is being created and anysoon later it's being "reinserted"...
Of course, the drive is NOT removed, nobody touched the Mac Pro! Also I did the same procedure 3 times and the result was always the same.
I also tried setting up JBOD and different RAID levels which do all work without a problem. Only when choosing RAID5 (what I intentionally bought the card for), the problem reappears
Anyone any solution or hint for me concerning this problem? Many thanks in advance!

One drive completely broke down later. Replaced that drive and since the problem's gone!

Both SAS and SATA RAID on same controller

Can I install both SAS and SATA raid on an RD240 with 8708EM2 controller?
I want to install first volume mirrored 600 GB SAS and second volume mirrored 2 TB SATA drives.

welcome to the forum!
both SAS and SATA arrays are supported simultaneously on the PHYs but it's not recommended to mix the two within an array (ie: creating a SAS+SATA disk RAID 1). per your question you can have a SAS+SAS RAID 1 plus a SATA+SATA RAID 1 concurrently on the LSI 1078 chipset.
ThinkStation C20
ThinkPad X1C · X220 · X60T · 600

Xserve and xserve raid works with iOS 10.9

xserve and xserve raid works with iOS 10.9

For the Xserve hardware:
OS X Mavericks: System Requirements
The Xserve RAID is known as a DAS (directly attached storage) device and provided the HBA card you're planning to use is fully supported in whatever server platform you've chosen (Apple, Microsoft etc) it will be work regardless of OS version.

NFS and ISCSI using ip hash load balance policy

As i know all these days that the best practice for iscsi is to use single nic and one standby with " route based port id" ButI have seen in a client placethat NFS and iscsi are configured to use"route based ip hash" and multiple nic and it has been working all these days. i can not see that iscsi does multi path there.I was told by the sys admin that it is ok to use that since the both protocol are configured in same storage and it does not make sense to separate it ,his explanation that if we want separate policy then use separate storage that is one for nfs and other for iscsi, i do not buy that, i might be wrong.He pointed his link below saying that you can use ip hash.http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalI....Is it ok to use " route based ip hash for iscsi as on the link?
This topic first appeared in the Spiceworks Community

When you create your uplink port profile you simply use the auto channel command in your config:
channel-group auto mode on
This will create a static etherchannel when two or more ports are added to the uplink port profile from the same host. Assuming your upstream switch config is still set to "mode on" for the etherchannel config, there's nothing to change.
Regards,
Robert

P7N Diamond and multiple RAID

I'm looking to buy a new system and MSI's P7N Diamond looks like a good choice to me.
The specs says that the onboard nForce 570i SLI supports 6 SATA II ports in RAID 0, 1, 0+1, 5
Is there anyone who knows if its possible to have multiple RAIDs configed on that controller?
I'm thinking 2x WD Raptor 36GB in one RAID 0 for the system and 2x WD 1TB in one RAID 0 for data.
Is it possible to have both RAID-disks and non RAID-disks (single disks) on the controller on the samr time?
Many questions...
Most gratefull for any help!
Best Regards!
/Pär

"Is there anyone who knows if its possible to have multiple RAIDs configed on that controller?"
Yes should be fine, just create 2 independent arrays.
"Is it possible to have both RAID-disks and non RAID-disks (single disks) on the controller on the samr time?"
If you want to use the same Sata ports for single disk(s), you will need to disable RAID from BIOS for those Sata channels where are connected your HDD's which will be used as single drive.
Example you may have:
SATA1 WD Raptor 36GB |
SATA2 WD Raptor 36GB | both 2x WD Raptor 36GB assigned in RAID0 (or 1) ---> Array 1
SATA3 WD 1TB |
SATA4 WD 1TB | both 2xWD 1TB assigned in RAID0 (or 1) ---> Array 2
SATA5 Some other SATA HDD as single drive (RAID for SATA5 should be disabled in BIOS)
SATA6 Some other SATA HDD as single drive (RAID for SATA6 should be disabled in BIOS)

SC 3.2 and iSCSI RAID

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