If I connect two servers (each in a separate subnet ) to a single SAN with a back-to-back connection using iSCSI (each server is assigned to a separate LUN)
Is there any security issue? If I have access to one server can I bypass security mechanism and access other server or it's LUN?
Added identical new HDDs to my server. These don't scan/show up in RAID controller.
My PowerEdge shipped with:
4 HDD SATA 1TB 7.2K Model ST1000NM0011
These scan regardless of which location I plug them into (1-6) in my server.
Ordered and installed
2 additional HDD SAME model.
The light ON the HDD blinks 1X at power up.
The light BY the HDD on the server doesn't light up.
Deleted Virtual Drives in the RAID controller. Rescan. New Drives don't show.
Hi
Have 2 PCIE SSD's in a Poweredge 820, and wish to software raid them. Doesn't seem to work. Are there any procedures that need to be followed?
Thanks
I've tried hwinfo64/the dell server administrator/smartctl to no avail.
Hi everybody,
Please help me solve my problem about HDD:
Model Server: Dell R710
5 HDD ( 146GB, 15k, SAS, 2.5inch), run RAID 5.Today, HDD no 4 has been failed. But i don't have HDD same this. So, can i replace it by new 10k drive (300GB) ?
Thanks a lot !
Hello
Pretty new to Dell servers so a steep learning curve here, please be patient with me :)
We have purchased an R320 server and decided on the PERC H310 controller and SAS disks for a RAID1 setup. In retrospect this may not have been the ideal controller, but it is what it is. Looking at improving disk performance (server is not heavily loaded, but suffers bad sequential write performance on large files causing occasional read timeouts for users).
I discovered the Disk Cache Policy was disabled and many have found better performance by enabling. According to what I heave read, disabled is default for SAS disks but enabled for SATA disks.
My question is... why? Why is the default different for the 2 disk types? I can't find any answer to this and I'd like to understand why Dell thinks it is better for SAS not to have disk cache policy before I go changing this setting.
I look forward to discussing this!
Is there a limit on the number of virtual disks I can create on a Perc H310 or am I just limited by the number of physical HDD I have and the types of raids I configure?
Can anyone tell me the exact steps to replace the HD's in the array when they start to fail. It has PERC6. There are 4 drives in the array and two are failing.
Can they be hot swapped without downtime?
Hi,
I have a T310 sever w/ SAS 6/iR and 2 250GB hard drives (w/ 3Gb/s) attached to Slot 0 (Primary) and Slot 1 (Secondary) of the SAS/SATA backplane. I got a message in BIOS saying system is in a degraded state, so I looked at the drives, and indicator light in Slot 1 wasn't blinking. I also kept on getting error in Windows Event Viewer saying Hard Disk has a bad block. I figured either both or one of the drive is failing, so I got 2 WD Enterprise 1TB w/ SATA 6Gb/s. I first removed the not blinking drive in Slot 1, and replaced that with the new one, and turned the system on. Still the same thing. I took it out from Slot 1 and inserted into to Slot 2, and it started blinked, and instructed it to rebuild/resync from LSI BIOS. After the secondary was done rebuilding, I removed the old drive from Slot 0, and replaced it with the new 1Tb drive, and it started to rebuild. After everything was done, I boot into Windows, open Dell OpenManage, and notice couple of things: the negotiated speed is only 1.5Gb/s, while the compatible speed is 3.0Gb/s. Also, both drives say 250Gb for space instead of 1Tb.
I thought the speed issue might be because I have one drive in Slot 0 and the other in Slot 2. So I remove the drive in Slot 2 and put it in Slot 1, and it doesn't blink or anything, and degraded message came up again. I am thinking maybe the Slot 1 is bad on the backplane? Is that possible? Or is SAS 6/iR going bad? Is that replaceable or integrated into the motherboard?
Also, how do I get the negotiated speed back up to 3Gb/s like it was before? Could having drives in Slot 0 and 2 have to do something with it?
Also, what is the best way to get the 1Tb space without losing data on the disk? I don't mind going through the rebuild/resyncing process again, but can't lose data on the disk.
System stats:
Core i3, 4GB RAM, Windows Server 2008 R2 64-bit,.
UP
I have a Power Edge T300 server with 2 WDABYS drives in it set to Raid 1. One of the drives has failed. Will the Bios tell me what slot has the failed drive in it? Also, what is the sequence to replace the drive? The machine will boot when I click on "Windows Server 2008 - Secondary Plex"
Any input would be appreciated.
Thank you
I am working on a PowerEdge T110 with a SAS6/ir Raid controller and 2x 250gb SAS drives (RAID 1). I need to upgrade to (2x) 1tb SAS drives (RAID 1) without compromising the DATA (windows server 2008 OS).
Here is my plan:
1. create a second RAID1 array with 2x 1tb SAS drives.
2. Clone the data.
3. Disconnect 250gb SAS drives.
1.) Is this the right way to do it?
2.) What "Dell compatible" drives should I use?
3.) currently the system only has 1 cable connected to channel 1 on the SAS6/ir with 4 SAS connectors, can I run 2 arrays off of the same cable or do I need to get a second cable and connect it to channel 2? ( maybe a dumb question)
Help appreciated.
Hi All,
I have a problem with the server R720 - I/O operations. The read/write operations on
Windows Server 2008 virtual machines are very slow. Linux virtual machines are working on
acceptable level. It does not depend on server operating system (i.e. proxmox, ubuntu, suse) and
raid / bios configuration – different OSes and configurations are giving the same
results – I/O operations on VMs are very slow.
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Virtual disc
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I have tested every read/write policies configurations.
Controller
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Host W/R
dd if=/dev/zero of=/var/lib/vz2/file bs=512 count=2097152 2097152+0 records in 2097152+0 records out 1073741824 bytes (1.1 GB) copied, 11.7318 s, 91.5 MB/s
hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 1986 MB in 3.00 seconds = 661.70 MB/sec
linux (VM )
dd if=/dev/zero of=/home/sadmin/file bs=512 count=2097152 2097152+0 przeczytanych recordów 2097152+0 zapisanych recordów skopiowane 1073741824 bajty (1,1 GB), 14,5257 s, 73,9 MB/s
/dev/vda:
Timing buffered disk reads: 958 MB in 3.00 seconds = 319,09 MB/sec
windows serwer 2008 ( VM )
I would be very grateful for any help – the problem makes the server unusable for the company needs. My boss does not want to wait any longer to a solution of this problem.
Hello to all,
I just started my involment with DELL and i need to setup an old Poweredge 1950.
My problem is that all OS require the controller driver to recognize my RAID setup.
All Dell Downloads are EXE files whereas all Os require the INF files.
I have tried using OMSA etc but still system does not recognize the controller.
Any Help???
A drive failed in the raid. I replaced it. The docs indicate the controller should pick up on that and use it and rebuild. Ain't doin' it.
PowerEdge 2900, w/PERC 6/i controller
There are 10 drive slots all in use. 2 to a redundant RAID1 for the OS. The other 8 for a striped and redundant RAID10 for Data. Both have a bad drive. I need to get Data working right first. Since there are no more slots I can't add a hot-swap so the system would pick up on that. And I can't add another drive and then reconfigure the RAID to use it. So I put a new (larger) drive in place of the one it said was bad but it continues to say that drive is "failed". Have rebooted since. The available actions are just "blink", no option to put online or anything like that. The "Import/Recover" fails and says all that can be recovered has been. What can I do to get it to use this disk?
Thanks.
p.s. Windows version? Frankly confused. "System" says , Server2007 Std FE SP2, logon screen says SBS 2008.
PowerEdge 840
PERC 5/I
OpenManage 6.5
OpenManage reports driver is out of date
Driver Version 2.13.00.64
Minimum Required Driver Version 2.24.00.64
Support page for this service tag does not contain a PERC 5/I driver download
Where can I download this?
Hi All,
There is a requirment to monitor server states through LED indicator. So that if any of the LED indicator goes to fault state. It will throw an alert to the system admin. So we found that there is a tool Dell OpenManage Server Administrator" to monitor thr Dell server alerts.
So we need to know the following things:
1.Is the tool is intigrated with server or it's a licensed version.
2.How we will set up the monitoring.
3.How we will set up the alerting.
4.Is it possibile to intigrate with any other Tool.
Hello,
I have a poweredge with a hard drive failure. Could someone walk me through the steps to replace? I am not sure if I should just pull the drive and put in the new one or what? I am a noob so specifics are much appreciated.
Details:
Openmanage 7.1.0
Windows Sbs 2011
PERC 6/i Integrated
(3) SAS 7.2K Seagate 500GB drives.
Virtual disk - Degraded
Hot spare - Not assigned
Size - 930.50GB
Layout - Raid 5
The battery learn cycles is triggered automatically every 90 days in my R610 servers. However, the Disk performance will be affected because of the write through policy change during the battery learn cycle.
Now I would like to triggered the manual learn cycle with the following command, and run the command with Linux cron job every 2 months.
/opt/dell/srvadmin/bin/omconfig storage battery action=startlearn controller=0 battery=0
Will it cause any impact to the battery life time if we triggered the battery learn cycle every 2 months?
thanks
Macus
I need to connect HP StorageWorks MSL 2024 to a new server with SAS interface. I have an additional R410 1U server and I would like to know that is it possible to buy and attach a SAS HBA Card to that? There isn't much space for expansion, but I'd still like to know the answer.
Hi,
I have a few DELL PowerEdge 2950 servers with 8x SAS 2.5" disks. I saw that it is possible to put 2 more 3.5" racks and disks under the CD and there is an additional power available there.
Is there a 2x 3.5" disks backplane available that can be put there, to be used with an additional raid controller?