Is there any reason not to turn off hard drives after prolonged inactivity?
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Disk Power Management
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iSCSI drive reverts to RAW
Scenario: I have a Windows 2008 R2 server that's connected to a FreeNAS server via an iSCSI interface for backup purposes. The Windows server backups to the FreeNAS server successfully every day. The problem is, for various reasons the Windows server will lose it's network connectivity. When it comes back up and and reconnects to the FreeNAS server, it comes up with a RAW file system instead of the already previously formatted, and used NTFS system. Windows wants me to reinitialize the disk, but I don't want to lose my data. I recall this happening once before and was able to get everything back up and running without losing any data. Can someone help me shed some light on how to fix this? I'd like to know how to get my drive back into NTFS mode without reinitializing the drive.
Just FYI, I've already tried disconnecting and...
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File server structure
Hello all,
I need suggestion on my current situation:
I have 2Cybernetics iSAN devices
First device: currently the workhorse,have all the company data.CAD
drawings, finance, and HR. all users access data through network drives
base on their login scripts.
2nd iSAN device: all data replicated from the first unit.
First iSAN device is connected to windows server 2008 r2 using
iSCSI: Lately this device is starting to failing, keeps. I contacted
the vendor, vendor provide firmware to upgrade the device, the firm
upgrade failed. when the unit goes down, the entire staff cannot work
Over the past few months the company reorganized intofour different divisions or group.
base on the new structure I planned to get rid of the iSAN units, and
build 4 new VM server 2012r2. this way if something happen to one of
the server, only the group that is assign...
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Data Flow
Hai Plz told the total steps in Data-flow Management
The Following flow in right or not...............
Source End:
Source->Encryption->Splitting->Merging->Message digest->check-sum calculation
Destination End:
Merging Packet->check-sum calculation->Decrypt->Destination
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Advice please: Dead Backplane with LSI Raid Card?
For the last year, up until recently, I've been happily running the following:
ASUS RS520 Chassis
http:/
With LSI 9260-8i Raid Card http:/
With eight 2TB drives in Raid6
On boot up, the Raid Card bios says 1 drive is missing and running in a degraded state
Raid Card WebBios says this "pd missing : Encl/slot/deviceid unavailable"
I had a spare drive, so I replaced it.........but the problem persists
I had spare mini sas cables, so I replaced them......but the problem persists
I had a spare Raid Card, so I replaced it ....but the problem persists
So I've replaced the Drive, Card, and Cables. I've drilled through every menu in the raid card web bios thinking I needed to re-enable a check box.....but I can't...
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More numbers from Backblaze
Most of us aren't going to be using as many drives as BackBlaze does, or the consumer level drives they use (uck), but they're the only ones publicly discussing failure numbers or large quantities of drives.
https://www.backblaze.com/blog/3tb-hard-drive-failure/
Apparently the 3TB Seagate drives from 2011-2012 are extra failure prone. Which actually makes sense since that was the time they were playing games with purchasing drives via odd channels. They also state that the $5 price point would not have been sustainable if they wouldn't have played those games with the sales channels.
Good read at least.
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a SAN has two controllers so it can't fail! Right?
I know that we've heard the above comment many times. SAN's are seen as these magic bullets that work 24/7, don't fail and never have performance issues.
Today, I'll explain exactly why that is a fallacy and relate my own experience of just what can go wrong. I would also like to point out that this scenario has now happened to me three times with three different SAN vendors. All three shall remain nameless but they are big enough vendors to have been mentioned on this site several times.
So, the background is simple. Fairly large SAN, holds a lot of data. The company bought it two years ago because everyone else had a SAN and they didn't want to be left out.
Anyway, The OS on the SAN was going end of life plus as the backend was largely linux with fun things like openSSL it had a few security holes that needed patching.
The SAN vendor...
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SSD on Dell PERC H200 controllers?
I am looking at upgrading some older Dell servers with H200 controllers to SSD. The plan is to run Hyper-V 2012 R2 on the host, and then run a DC/file/print server in one VM, and then a RDS session host in the second VM. These are not necessarily high IOP servers, but I do need more performance than the current SATA hard drives that are installed. I was thinking about installing two or 4 drives, either RAID 1, RAID 10, or two RAID 1 depending on drive capacity vs. required useable capacity. two RAID 1 would be incase I use ~480 and ~240 GB drives to get my desired capacity.
I guess I could use RAID 5 if I bought a different controller.
Should my plan work with the current controllers?
Here are the drives that have been recommended to me.
- Kingston SSDNow E50
- Kingston SSDNow KC300
- Kingston V310 (consumer drive? based on price)
- Micron M500DC
- ...
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A simple (?) question regarding jumbo frames
Hi guys,
I have a simple-ish question regarding jumbo frames and SAN storage. I know that jumbo frames needs to be supported and set end-to-end on the storage segment to work, but does this extend into the LAN segment as well?
Assume we're talking about a virtual environment, so the topology goes something like:
SAN --> SAN Switch --> Virtual Host --> Core Switch --> Edge Switch --> User
At what point can you stop worrying about jumbo frames? Or are you setting the MTU to 9000 on every user's computer?
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Supermicro chassis - hotswap only SAS/SATA?
I have been looking at Supermicro website such as
http://www.supermicro.com.tw/products/chassis/2U/216/SC216BA-R920LP.cfm
In the hotswap section it says
Hot-swap 24x 2.5" SAS / SATA Hot-swap drive trays
SAS or enterprise SATA HDD only recommended
I wonder if anyone knows the reason for this? I am thinking to pop in SSD on these babies
I am using LSI 9361-8i card
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MegaRAID Degraded Array? Help!
Hi All,
I'm new to Spiceworks and would appreciate any and all help I could get! So we have a (VERY OLD) server that is running a RAID 1 array from what I can see. Two days ago I could not get it to boot up and realized this message was coming up upon boot... Telling me the array is "Degraded"...
After hitting F8 to run the RAID Utility I am shown this screen....
I am new to RAID restoring and don't know what to do. It appears as if the physical drives are both "online"? How would I tell which drive to replace and how would I go about doing this? Do I need to insert another drive in its place as a "spare drive pool"?
Thank you so much for your help! I really need it :)
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Best enterprise NAS?
Looking for a NAS recommendation that is at least 24 TB capable, iSCSI, redundant power supply, and quad 1GB ports. 8 drive bay minimum.
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Snapmirror on netapp causing problems
i have 1 iscsi lun with 1 volume on it on our netapp, when a snapmirror fires up on this volume, all client access to it grinds to a crawl. does anybody know if this is a known issue for iscsi performance when snapmirror is running?
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Just installed my 1st SSD. I want to cry.
So, I just installed my first SSD drive—a Samsung 850 PRO 256GB.
Long story, but the reception desk must run 32-bit Win7 for now. Since they're stuck with the old architecture and sub-4GB RAM, I figured it'd be nice to throw an SSD in there—maybe make it not quite so painful—since just about everyone else is on brand new 64-bit machines.
I scavenged the old custom builds around the office (most of which are Core 2 Duos) and was able to pull together an i5-760 2.8 GHz—so, a 5-year-old processor...nothing fancy—and slapped in the fasted 4GB RAM chip the motherboard could handle.
Well, I just installed the OS and have been configuring and updating—including Service Pack 1...
This thing... it's just... it's so fast! It's a thing of beauty.
I've never seen the Windows Update rebooting process go so quickly. I've had users bail on the update...
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Lenovo/IBM Cachecade SSD Selection
I'm designing two big stand-alone virtualization host servers from Lenovo/IBM (see below for details), taking advantage of the cachecade feature of the internal storage controller.
The maximum SSD cache supported is 512 GB but they have only 800 GB (about $2300) or 480 GB (about $1200) sized enterprise SSD. The price difference is about 10% of the whole server.
I'm tight on budget: would you suggest to go for the 800 GB and loose space and money or go for the 480 GB (of which they say the usable space is actually less)?
P.S. the brand Lenovo/IBM is fixed. Specs:
- 2x CPU, 2.3 MHz, 12 core
- 128 GB RAM
- Controller M5210
- 2x SSD (480 or 800 GB)
- 12x 1.2 TB 10K RPM SAS HDD + 1 spare
- 8x 1 GB/s ports (4 integrated)
- redundant PSU
- usb key for hypervisor boot
- on-site 4H warranty
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Need a storage appliance for archiving, suggestions?
Hey Guys,
We have about ~$9000 in the budget for a new storage appliance for misc storage and archiving.
We use Veeam as a backup platform and the appliance will likely act a 'backup copy' location as well as a file archive. Additionally it will be used as a misc storage platform for odd jobs and tasks.
Currently we are demo'n an Exablox (8x6tb drives but 15tb usable space because of storage method)which I don't mind, but I feel for ~$9800 we we might get something with greater performance and usable space.
I am looking at these at the moment;
http://www.thecus.com/product.php?PROD_ID=56
https://www.qnap.com/i/in/product/model.php?II=124
If anyone has any other suggestions let me know!
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68 pin scsi to usb
I have a dead server which is beyond repair and not worth the time and money spending on it. It has a 68 pin fujitsu scsi hard drive. the data in it is valuable to me. What is the easiest way to transfer the data across into a usb.
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To RAID 5 Defenders - An Example of Failure
http://community.spiceworks.com/topic/post/4476614
Pay close attention to the rebuild time and all the issues resulting from a failed RAID 5.
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EMC VNX vs HP 3Par - End of year SAN shopping
I'm at the end of my budget year, and I'm positioned to purchase a new SAN. I'm not a huge environment - probably a total of 10 TB of storage. I have existing 8 GB fiber. I've dove in a lot with both vendors to look at technology. I'm looking more for how you folks have found working with the equipment after you've bought it. Any regrets or things you love, etc. Thanks!
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What offers better performance? (X12, 15K, 12Gbps) or (x24, 10K, 6Gbps)
Sorry for all of the questions lately. I truly do value your insight.
I am looking at a server that can hold 24 SAS drives. The server or RAID card can only support 16 drives in one array. So if I decide on 24 drives I will most likely create two twelve drive arrays.
My question is based on 12 Gbps vs 6 Gbps.. I am not concerned about available hard disk space... Just performance..
What offers better performance. Assuming a 60% read / 40% write ratio
For the same price I can build it out one of two ways. Also the server will only have 1 RAID controller.
Option 1
Drives: 12
Speed: 15K
Interface: 12 Gbps
Array 1: RAID 10 (1,700 IOPS)
Array 2: N/A
Option 2
Drives: 24
Speed: 10K
Interface: 6 Gbps
Array 1: RAID 10 (1,100 IOPS)
Array 2: RAID 10 (1,100 IOPS)
I would think that option 2 is the better option. I would place just the SQL DB's and SQL Transaction...
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