topic SSD 730 write cache power loss protection in Solid State Drives (NAND)

SSD 730 write cache power loss protection

PChad2 — Tue, 09 Jun 2015 11:12:53 GMT

Hi,

There's a lot of conflicting information on the Internet about the SSD 730, presence (or otherwise) of capacitors, and write cache protection on power loss.

I need an SSD that will reliably survive sudden power loss (for ZFS intent log). I know that the S3500 and S3700 models will do this.

Will the SSD 730 reliably survive sudden power loss without loss of data resident in the write cache?

Thanks,

Re: SSD 730 write cache power loss protection

PChad2 — Wed, 10 Jun 2015 10:26:34 GMT

Somebody from Intel has replied to this privately to me... They said:

According to its official specification, the Intel=C2=AE SSD 730 Series currently does not support sudden power loss protection.

Check here for further reference: http://ark.intel.com/products/81039/Intel-SSD-730-Series-480GB-2_5in-SATA-6Gbs-20nm-MLC http://ark.intel.com/products/81039/Intel-SSD-730-Series-480GB-2_5in-SATA-6Gbs-20nm-MLC ARK | Intel=C2=AE SSD 730 Series (480GB, 2.5in SATA 6Gb/s, 20nm, MLC

However, this feature is currently supported on the Data Center SSDs such as the Intel=C2=AE SSD DC S3700 and the Intel=C2=AE SSD DC S3500 as you hav mentioned above.

I appreciate the response, but it beats me why they want to keep it secret... The static on the Internet on this subject is all completely unresolved... and very annoying.

Re: SSD 730 write cache power loss protection

ASouz7 — Thu, 11 Jun 2015 15:48:53 GMT

gpw928,

We would like to inform you that we have received confirmation that PLI (Power Loss Imminent) is fully functional in the Intel® SSD 730 Series, and it is supported for internal SSD operations. The Intel® SSD 730 Series incorporates power loss protection circuitry, capacitors and firmware support to help protect user data.