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OK, YES, it's slower but for a personal user with a 2-4TB Drive 1/2 full, a dead array, is up and running within 30 minutes with one big difference from traditional file backup.
INTEL THUNDERBOLT 3 FIRMWARE UPDATE SOFTWARE
The key is that if you do lose a drive in a RAID -0 array, $50 software does much more than restore. These days there are Applications for $50 that can create PITs (Point in Time Snapshots, and also create differential bootable backups to a single drive for the latter and to a NAS, or just a Large HDD for maybe 3 PIT snaps. I know most people who are not familiar with RAID believe RAID-0 is dangerous, since they say ( correctly) if you lose one drive out of 8 unlike say, RAID-5 or 6, there is no (what is called) Parity Drive waiting with a Hot Spare to restore the array which takes dreadfully long. Back with IDE and very slow drives, even SAS 10K and 15K drives were slow, the answer was always smaller and cheaper drives deployed at RAID-0. I have been in the IT Business almost 26 years. The 9361 8i for example, has two 1.2 GHz PowerPC processor cores and a 72-bit DDR3 interface
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The reasons for the speeds higher than just the full scale of the speeds of the 8 drives, is the RAID Controller and also the reason the write speed is faster, is due to something called CacheVault. What you'd see is with a Stripe of 128, and with two of my settings being " read ahead" and " ALWAYS write back," gives me about 6 GB/s Read and about 6.8 GB/s Write. Thus, 8 configured as RAID-0, just at the max scaling (no PCIe2 bottlenecks) 550 x 8 = 4,400, or 4.4 GB/s Read and 530 x 8 = 4.24 GB/s rightįor some reason I can't seem to drag an image of a benchmark on the SATA6 array I am running, but I'll try when I make the post. The Max speed of a single SATA6 SSD is about 550 MB/s Read and about 520-530 Write. For example: right now I am still using 8 x 240GB Toshiba SSD's SATA6 Gb/s, waiting for an order I placed for 8 x 400GB SAS Micron SSDs.
ALSO Mini SAS SSD's run the gamut with respect to each drive's speeds. The SAS are the SFF SSDs 2.5" 0.7, and have the same header as SATA6, except EACH ONE runs at 12 Gb/s as opposed to 6 Gb/s. I am using the same Broadcom/LSI MegaRAID 9361 8i controller, which is Gen 3 and will run up to 8 Internal SATA6G or SAS12G. I'm hoping I will be able to add an attachment, but just in case, I'll write out the explanation. Anyway, I'm posting to try and demystify where the high speeds are coming from. There have been 3 updates, including the most recent dated Jan 2019 and ASUS for whatever stupid reason still has the one from 2017: (17.2.71.250). Shan, I came upon this thread in a search since I am having no luck finding any updates for my ASUS Thunderbolt EX3 PICe3 Card. Still even TB 2 should be getting much higher speeds no? Basically shouldn't I be getting 40gbs? I am confused how this all works.
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The drive I am using is actually a TB 2 with a TB 2 to 3 Apple dongle I use for my Mac Book Pro. Like I said it's way beyond my SSDs connected directly to my system. Those are regular hard drives? I am so confused as to how you even get to those speeds. 15.1Ģnd Monitor: LG 34” 34UC87M-B Curved Widescreen, 3440 x 1440Īrris SURFboard DOCSIS3.1 (dual Ethernet Ports switchavble between Teaming and FailoverĪSUS Thunderbolt PCIe 3.0 (only use I have is 5GB/s Point in Time Snapshots.
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Win 10 Pro on main WS & Debian Linux (KALI Distro) running on VMware Workstation v. No, but using NAS for PIT Snaps and 4GB DAS Single Drives for differential & Bootable Backup. LG 34" 34WK95U-W 5K (5120 x 2160) Nano IPS HDR 600 & Updated to Dolby Digital HDR 10bpc & 14 bpc 3DĨ x 400GB mini SFF SAS SSDs 2/5" 12 Gb/s RAID-0 / 3.2 GB Virtual C:\ Drive