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Same as its brothers/sisters, it's optimized for 4 KB blocks. /* * OCZ Vertex 4 SSDs * 4k optimized */ { T_DIRECT, SIP_MEDIA_FIXED, "ATA", "OCZ_VERTEX4*", "*"}, /*quirks/DA_Q_4K Borja.

Hi, I''ve ordered a new server with: - 4x600GB Toshiba 10K SAS2 Disks - 2x100GB OCZ DENEVA 2R SYNC eMLC SATA (no expander so I hope no SAS/ SATA problems). Specs: http://www.oczenterprise.com/ssd-products/deneva-2-r-sata-6g-2.5-emlc.html I want to use the 2 OCZ SSDs as mirrored intent log devices, but as the intent log needs quite a small amount of the disks (10GB?), I was w...

For using SSDs: Are there any format/mount parameters that should be set for using btrfs on SSDs (other than the "ssd" mount option)? General questions: How long is the ''delay'' for the delayed alloc? Are file allocations aligned to 4kiB boundaries, or larger? What byte value is used to pad unused space? (Aside: For some, the erased state reads all 0x00, and for

Now the test for the Vertex 2 Pro. This was fun. For more explanation please see the thread "Crucial RealSSD C300 and cache flush?" This time I made sure the device is attached via 3GBit SATA. This is also only a short test. I''ll retest after some weeks of usage. cache enabled, 32 buffers, 64k blocks linear write, random data: 96 MB/s linear read, random data: 206 MB/s linear

I''ve got two recent examples of SSDs. Their pristine state from the manufacturer shows: Device Model: OCZ-VERTEX3 # hexdump -C /dev/sdd 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 1bf2976000 Device Model: OCZ VERTEX PLUS (OCZ VERTEX 2E) # hexdump -C /dev/sdd 00000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................| * df99e6000 What'...

I have a couple development servers running centos 6.3 64bit that have LSI 9211-8i SAS2 controllers connected to a SAS2 backplane. these work fine with SATA hard disks (populated with a bunch of 3TB SATA drives)... I'm trying to install a OCZ Vertex3 SSD on each of the two servers to do some ssd caching tests... system sees the drive, so I do the following... # parted -a min /dev/sdu parted> mklabel gpt parted> mkpart primary ext4 2048s -1s parted> q # mkfs.ext4 /dev/sdu1 and it hangs at 'Disca...

I have a 50 gig OCZ Vertex LE drive that needs a firmware update. When I run the Windows only flash program in wine it doesnt see the SATA ssd drive it needs to flash. I have booted off another hard disk. I need administrator privileges to see the drive so I config'd wine for win98. I also tried to manually ad...

Hi all, I currently have a OCZ Vertex 4 SSD as a ZIL device and am well aware of their exaggerated claims of sustained performance. I was thinking about getting a DRAM based ZIL accelerator such as Christopher George''s DDRDive, one of the STEC products, etc. Of course the key question i''m trying to answer is:...

Hi folks, an Asterisk (www.asterisk.org) box will be built with the following specs and I wanted to know if CENTOS has a built process/config/parameter/special distro to target the AMD Opteron Dual Core plataform: 2 amd opteron 265 dual core 1.8 Ghz 2mb l2 cache 2x1024 ocz c2-6400 dual channel gold GX XTC 2 Seagate 16mb cache 300 GB barracuda 7200 drives another 2 Seagate 500 GB 16mb cache baracuda ata 7200 drives lite on dual layer lightscribe 16x dvd+rw/rw x48 drive 4 port Sata Raid controller raid - 10 2 gigabit E broadcom 10/100/100 GBE lan controller Tyan Thunde...

I recently got a new SSD (ocz vertex LE 50gb) It seems to work really well as a ZIL performance wise. My question is, how safe is it? I know it doesn''t have a supercap so lets'' say dataloss occurs....is it just dataloss or is it pool loss? also, does the fact that i have a UPS matter? the numbers i'...

...controller='4' bus='0' target='0' unit='0'/> </hostdev> I took it from http://libvirt.org/formatdomain.html#elementsHostDevSubsys yet a Linux guest (SL7) fails to find/detect any disks, if I dumpxml I get this: <device> <name>block_sdb_OCZ_VERTEX4_OCZ_352C77TZVQF1Y3SX</name> <path>/sys/devices/pci0000:00/0000:00:1f.2/ata5/host4/target4:0:0/4:0:0:0/block/sdb</path> <parent>scsi_4_0_0_0</parent> <capability type='storage'> <block>/dev/sdb</block> <bus>ata<...

I''m running a mirrored pair of 2 TB SATA drives as my data storage drives on my home workstation, a Core i7-based machine with 10 GB of RAM. I recently added a sandforce-based 60 GB SSD (OCZ Vertex 2, NOT the pro version) as an L2ARC to the single mirrored pair. I''m running B134, with ZFS pool version 22, with dedup enabled. If I understand correctly, the dedup table should be in the L2ARC on the SSD, and I should have enough RAM to keep the references to that table in memory,...

Hi, I don''t know if it''s already been discussed here, but while thinking about using the OCZ Vertex 2 Pro SSD (which according to spec page has supercaps built in) as a shared slog and L2ARC device it stroke me that this might not be a such a good idea. Because this SSD is MLC based, write cycles are an issue here, though I can''t find any number in their spec. Why do I think it mi...

...reboots, i try to compile my own dom0 kernel, but always says the same thing. I''m seeking on create the initrd image, but nothings works. :( The currently hardware profile is this. Intel Server Board SE7230NH1-E (VT Enabled Motherboard) Intel Pentium D 830 CPU (3Ghz x 2 CPU) 2 GB RAM OCZ @667Mhz Adaptec 19160 SCSI Adapter (Based on AIC-7892). The Sarge unstable works fine, no errors and goes up fine. when i boot to xen dom0, the boot process as fail with the panic i''ll describe before. Some body could bring me a hand to fix this problem. Thanks a lot. Edgar Díaz. Xen n...

I set up a new system that includes the following: ASUS AE8N-E Motherboard (NVIDIA nForce 4 Ultra Chipset) AMD Athlon 64 3800+ Processor OCZ PC3200 Gold Edition 1GB Memory EVGA GeForce 6600 PCI-Express x16 Video Card CentOS 3.7 The video card wasn't detected and I had to use the VESA driver (generic) when I installed CentOS 3.7. As this is the first time I've used a NVIDIA video card with Linux my knowledge is nil on this sub...

...in KVM-Qemu (standard installed on Ubuntu 12.04) has: seq (R/W) :319 / 146 MB/s 512k(R/W) :306 / 143 MB/s 4K(R/W) :10 / 7 MB/s 4K QD32(R/W):12 / 9 MB/s Need only Xen because of second graphic card pass through (here works fine). I have: intel e5-1620, 64 GB uDDR @1333Mgz, Dom0 on SSD OCZ Vertex4(@SATA3 port). Second SSD OCZ Agility 3 (@SATA3 port) with LVM 2 only for DomU. Kernel (3.4.7) + Xen unstable(rev 25705, Aug 02 14:44:53 2012 +0100) self compiled (according to Manual of Teo En Ming) DimU: Windows XP sp 2 # lvdisplay File descriptor 8 (pipe:[16062]) leaked on lvdisplay invo...

Has anyone actually used a SSD in a Centos setup? My little experiment with a s/h WD drive for /tmp and SWAP partitions kicked the bucket on Wednesday, when the poor WD drive caught the click-of-death. It was a s/h drive to start with and lasted about 4 months. But that was without the /var/log/ partition being written to it, as I mounted that back onto /var/log from the original drive. So

...five to ten minutes. I don't even know what information I should include here that might help, but here's what I have running at the moment: OS/Hardware Config: OS : CentOS 5.0 (2.6.16-8.1.6 Linux kernel) x86_64 with latest updates CPU: AMD Athlon 64 x2 4200+ M/B: ECS NFORCE4M-A ram: 2GB OCZ DDR2 800 (PC6400) hds: 160MB + 120MB Maxtor PATA UDMA-133 (160 is the boot drive) sds: 300GB Seagate SATA-150/300 (/boot and / are here) 320Gb WD SATA-150/300 vid: geFORCE7100gs (nVidia) PCI-E x16 lpr: Minolta QMS PagePro 1100 laser printer on /dev/lp0 mod: Agere Systems 56k WinModem (Lucen...

I have a 24 x 1TB system being used as an NFS file server. Seagate SAS disks connected via an LSI 9211-8i SAS controller, disk layout 2 x 11 disk RAIDZ2 + 2 spares. I am using 2 x DDR Drive X1s as the ZIL. When we write anything to it, the writes are always very bursty like this: ool 488K 20.0T 0 0 0 0 xpool 488K 20.0T 0 0 0 0 xpool

The standard controller that has been recommended in the past is the AOC-SAT2-MV8 - an 8 port with a marvel chipset. There have been several mentions of LSI based controllers on the mailing lists and I''m wondering about them. One obvious difference is that the Marvel contoller is PCI-X and the LSI controllers are PCI-E. Supermicro have several LSI controllers. AOC-USASLP-L8i with the