HPE StoreServ flash capacity boost coming At a briefing with HPE’s Chris Johnson, VP and general manager for EMEA, we found out that the company’s 3PAR arrays are in line to receive a flash capacity boost to around 8TB per SSD. EMC’s coming DSSD array will be using 3.8TB solid state drives. HPE says 3PAR arrays will be using drives double that density, 7.6TB, soon …
Seriously why is there no unified names for storage capacities.
A gigabyte is both 1024 Megabytes and 1000 Megabytes and 1024 mebibytes, but 1000 megabytes can be a gibibyte too. And then a tibibyte is 1024 Gigabytes or Gibibytes, but only 1024 of the gigabtytes that are 1024 mebibytes or mebibytes and not 1024 of the gigabytes that are 1000 megabytes.
What the hell people, and we wonder why users get confused by the computer magic...
It's quite simple.
1 gigabyte = 1000 megabytes = 953.6743 mebibytes
1 tebibyte = 1024 gibibytes = 1099.5116 gigabytes
A gigabyte does not equal 1024 megabytes or mebibytes. Simple as that. Don't let the misunderstandings of 20 years ago confuse you
You keep binary prefixes together and decimal prefixes together, and you won't have a problem.
I wouldn't assume that. SSD are great at Random IO, not sequential writes like a rebuild operation. Look at the maint manual for many arrays. Rebuilds for SSD are inline with their rotational counterparts.
HP is grasping at straws announcing they will adopt an SSD that isn't out yet. No news here... just a new drive in an array. Maybe they should announce they are doubling their cache because they qualified larger DIMMS as well. It is just as newsworthy.
"SSD are great at Random IO, not sequential writes like a rebuild operation."
They aren't not great at sequential reads/writes, they're just less better.
Mainstream SSDs with 550/500 MB/s read/write performance are already better than any hard drives I've encountered. It's only the cheaper SSDs that offered closer to 100-200 MB/s sequential writes, and they are rare now. For the enterprise, 1.5 GB/s can be had.
The rebuild on a 3PAR is across multiple SSD's so you get the aggregate performance of many SSD's not just the one hot spare and yes the rebuilds are faster for SSD's. They also have different failure modes to spinning disk so a direct comparison isn't so simple even so you always have the option to run multi parity. As for news worthiness I do tend to agree it's just another drive, but having said that they have been consistently ahead of the curve in the last few years adopting both new capacities and flash types on the 3PAR arrays.
EMC were making a big deal last week about 3.84TB drives 'coming soon' ... HPE has had them for some time and has double capacity drives imminently. Given that the only remaining barrier to flash being used for just about all general purpose workloads is cost, then this is going to be of interest to many customers.
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