Seagate Enters the Enterprise SSD Market with Pulsarby Anand Lal Shimpi on December 7, 2009 11:59 PM EST
- Posted in
Lifespan: Up to 6 petabytes of Writes
Seagate is calling the Pulsar a 5 year drive. If you are absolutely dying to know how many writes you can do to the drive, there is a way of finding out.
Remember the sustained write figures from earlier? Seagate guarantees that you’ll be able to run at those sustained write rates for a period of 5 years before the drive dies.
I’ve done the math below:
|Drive||Sustained 4KB Random Write IOPS||KB Written per Second||# of Seconds in 5 Years (1825 days)||Total Writes in 5 Years|
|200GB||10,500||42000||157,680,000 seconds||6167 TB|
At 1527TB (or 1.49 petabytes) of random 4KB writes in a 5 year period, the 50GB Pulsar has a worse lifespan than Intel’s X25-E (the 64GB drive is specced at 2 petabytes of lifetime random writes).
The 200GB drive however can allegedly withstand over 6100TB (6 petabytes) of random writes before it goes to SSD heaven.
With no standardized method of testing or verifying any of these claims, we can’t do much more than take Seagate’s word for it. Given Seagate’s reputation in the industry, I’d expect that its word is worth it.
There’s little more to say about Pulsar than what I’ve already mentioned. Seagate is finally getting in the game and, at least on paper, Pulsar appears to be in the class of Intel’s X25-E.
If Seagate can deliver on its promises, this should be good. Currently the enterprise SSD market is occupied by Intel, Samsung and a bunch of other contenders with unproven track records. Using Indilinx drives in a server environment is very tempting, but also potentially dangerous. There isn’t sufficient data out there today to say how long their drives will last under constant random writes. I tend to believe Seagate when they commit to Pulsar being a 5 year drive capable of over 6PB of random writes.
Pricing is another major unknown, but I’d expect the drives to be no cheaper than Intel’s X25-E: at least $11 per GB.
Even more exciting is the promise of consumer level SSDs from Seagate, possibly as early as 2010. Western Digital is next, whom I expect to join the race in 2010 as well. Once all of the major HDD players are in the race, we’ll see some real competition in both the high end and mainstream client SSD markets.