RAID10 Without BBU, With UPS

Posted by Richard on Server Fault See other posts from Server Fault or by Richard
Published on 2013-10-19T07:19:27Z Indexed on 2013/10/19 9:56 UTC
Read the original article Hit count: 179

Filed under:

ssd

|

raid10

|

bbu

My datacenter says that each rack has primary and backup power on each rack. I assume this means there is a UPS for each server. Therefore, do I have any need of getting a BBU for the following setup?

Intel Cherry 520 SSD x 4 RAID 10 LSI-9260 with WRITEBACK CACHE ENABLED

I have heard that without a BBU the data in the cache could be lost. Since my needs aren't mission-critical, I can afford to lose some data. But would the rest of the data on the HD be corrupted?

© Server Fault or respective owner

Related posts about ssd

SSD -- Special settings for SSD as secondary drive?

as seen on Super User - Search for 'Super User'
Hello all, I recently purchased an Intel SSD (X25-V 40GB) and I want to add it to my PC as a secondary drive (not the boot/system drive) so I can install specific software to it. Now, do I need to do anything special to ensure long life and peak performance with this as a secondary drive? I have… >>> More
Internal drives vs USB-3 with external SSD or eSata with External SSD

as seen on Super User - Search for 'Super User'
I have a need to carry VMWare Virtual Machines with me for work. These are very large files (each VM is 20GB or more) and I carry around about 40 to 50 VM's to simulate different software configurations for different client needs. Key: they won't fit on the internal hard drive of my current laptop… >>> More
"Windows detected a hard drive" issue in Windows 7 x64

as seen on Super User - Search for 'Super User'
I upgraded to the OCZ-Agility3 120GB from a 60 OCZ Vertex2 SSD. I cloned the drive from the Vertex to the new Agility. Everything seemed to have gone well and have not had any problems. Recently in the passed month I have gotten this error: I downloaded teh OCZToolboxMP and ran the SMART utility… >>> More
Disable SSD in ASUS 900 running Ubuntu 9.10

as seen on Super User - Search for 'Super User'
Recently I managed to completely mess up my ASUS 900, but I have no immediate desire to upgrade since it's only my travel laptop (and I'm waiting for a few months to see if anything interesting comes out). For now, though, I've hit an interesting problem. The 4GB SSD that is soldered onto the motherboard… >>> More
NTFS journal on different (SSD) disk

as seen on Server Fault - Search for 'Server Fault'
Some advanced file systems, like ZFS have the option of using SSD disks as a second level cache for the file system or for the journal. Is this possible with NTFS? >>> More

Related posts about raid10

EBS+RAID10+XFS slower than EBS+RAID10+EXT3 using MySQL?

as seen on Server Fault - Search for 'Server Fault'
We're currently using EC2 with 16 EBS volumes in RAID10 configuration for our MySQL data. I know some people don't recommend to put EBS volumes to RAID but that's not what I'm concerned about at the moment. Current format is ext3, but we're experimenting with moving to xfs, given many reports that… >>> More
Can't re-mount existing RAID10 on Ubuntu

as seen on Server Fault - Search for 'Server Fault'
I saw similar questions, but didn't find what solution to my problem. After power-cut, one of RAID10 (4 disks were) appears to be malfunctioning. I make tha array active one, but can not mount it. Always the same error: mount: you must specify the filesystem type So, here is what I have when type … >>> More
Converting software RAID1 to RAID10 for /boot

as seen on Server Fault - Search for 'Server Fault'
Array info: /dev/md0 - /dev/sda1 and /dev/sdb1 /dev/md2 - /dev/sda2 and /dev/sdb2 Partition info: /boot - /dev/md0 / - /dev/md1 I have two drives that are setup as RAID1 using software RAID on Redhat. I added two additional drives (same size) and I would like to conver the RAID1 to a RAID10… >>> More
Windows Server 2008 RAID10

as seen on Server Fault - Search for 'Server Fault'
Hello All, I am building a storage system for myself. I have a 16 bay SATA chasis and right now I have 1 x 500GB SATA for booting 8 x 1.5TB for data. 3Ware 9500S-8 RAID card where these 8 drives above are connected to. I am used to linux, but not in the RAID department. I have Windows experience… >>> More
explain md's raid10,f2

as seen on Server Fault - Search for 'Server Fault'
I know how most of the various RAID's work. But I stumbled on the recommended raid10,f2 mode while researching linux software raid. I don't really understand how it works on 2 or 3 disks. could someone explain it to me? or point me to a really good article that explains it? >>> More