05-03-2011 10:50 AM
Background: Server w RAID card (here, DL 180G5 with E200 and BBWC) with three smaller SAS disks (here, 146). Suddenly need much larger storage, and would like to migrate away from the smaller disk to maximize the total storage available internal to the server without an MSA.
What is the best way to migrate?
I have seen a solution of adding the larger drive, pulling out the smaller and letting the system rebuild, and repeat one by one, until all teh smaller drives are out one expands the array with disk management in SBS2008. I have read some concerns regarding RAID 5 stability in this case.
The other is with imaging software... Symantec System Recovery has a copy disk (including functions to copy the MBR and to set active). But on failure, how does on reset the original three drives to be the boot drive?
What is the easiest solution? Safest? What is the HP recommended solution? Is there a white paper on this?
05-03-2011 11:32 AM
Is this your only active directory server? If yes, I would consider buying a second server and migrating applications to it. You should have two active directory servers and a member server for your applications/data.
RAID 5 is not recommended for your OS or paging file. It can corrupt your registry and cause OS to fail. You should use RAID 1 or 10 for OS and paging.
I would start by determining how much storage space you will need over 3 years. Can you archive off data to CD/DVD or tapes?
Easiest is not a good way of doing it. I would look at the best practice and safest method. You should consider a new server with RAID 1 for OS and paging. Look at a hardware based NAS solution. Get a good backup solution that you can take offsite like tapes or a Barracuda cloud device.
05-03-2011 12:40 PM
Maybe that can be of some assistance.
05-03-2011 12:40 PM
You're obviously a very technical guy. However, this is a small business environment, so the law of number states that there are more SBS installations with 5 clients than 75 clients, and therefore, with not large IT budgets. So, yes this is the only 'active directory' and no, there isn't the money for a second server (nor the time or money for its care and feeding.) Regarding RAID 5 it is a common installation for a single RAID 5 in an SBS environment, and it seems to be supported for SBS given this link: http://technet.microsoft.com/en-us/library/cc52759
Thanks for your response.
05-03-2011 12:44 PM
Something I would recommend you to look into is to make a backup, erase the array, upgrade the drives, create new/bigger array and then put data back on from backup.
05-03-2011 12:52 PM
I took the link you mentioned above, and will read the WP. Looks very promising. I hadn't found it in my searches. Thanks
05-03-2011 05:09 PM
A NAS is a network attached storage device. They have 1Gbps connections that go on your switch. You put your applications on it. Two Active Directory servers protects your network from failure. If you lose the AD server, you are in trouble.
I am not a fan of a NAS because they are not great solutions. A SAN is better. A NAS is a poor man's SAN. LaCie has a decent NAS that would solve your problem. $1000-$1500. You move your data to the NAS.
05-17-2011 02:00 PM
I appreciate your concerns regarding multiple machines and respect your experience. I too have experience as an IBM SE for 13 years in midrage systems, then Unix. The guys selling water cooled machines to United Airlines don't get a small company with 5 people. It's just different... one thing being the size of the pile of money involved. And in small companies today, a grand is a lot of coin.
The issue is to move the bootable RAID configuration. One COULD also move this to a mirrored RAID as you propose, and that is a good idea for residnece devices. The trick is how to do it on a low functionality RAID controller such as the E200...
05-19-2011 05:21 AM
Same as if you have to replace a defective drive.
You can minimize the risk.
Check that all drives is error free
Use the System management homepage, that's the best/easiest tool for that purpose.
Ensure you have a good, testet backup and disaster recovery plan.
Why do you consider the e200 to be a low functionality controller?
Install a 4th large drive. Bigger than the current logical drive.
Create a new RAID 0, on that drive.
Create a software RAID 1
Create a bootable USb mem stick. Copy ntdect, ntloader and boot.ini to the pen.
Chenge the boot.ini to boot from disk 1 (That would be the mirror)
Test that you can boot on the mirror, using the usb memory.
Now you have a full functional copy.
Taking the same precautions, as mentioned in the beginning. replace the drives 1 by 1.
once that has been done.
remove the large disk.
In windows, break the mirror.
Use ACU: extend logical drive.
in windows extend the partition.
06-07-2011 03:51 PM
Low functionality - It is my understnading the Smart Array Advance Pack which allows for Advanced Capacity Expansion is not available on the E200.
In your scenario, instead of 1 large physical drive, what about second larger logical drive. What is best way to copy from the current logical? Prefer cold copy with bootable media. Then, since both logical arae on same RAID, how to select FIRST drive.. i.e. the one the BOIS will boot to when the E200 card is selected as the boot device?
Note this is Win Server 2008 so boot.ini does not exist...